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The old version of this post gave ten guidelines for choosing a fitness club, but the sentences were so garbled that many were hard to follow. The ten questions are still good ones, so I have rewritten them clearly, grouped them and added current consumer advice on contracts. A club should motivate you, not frustrate you, so start by deciding what you want from it and what your priorities are.

Where is it, and when is it open?

The old post says that location is the most important thing, because if the club is far from home you will have one more excuse not to go. That is hard to argue with. Check how long the trip takes at the times you would actually go, and whether the club is open then. Ask for the schedule of classes too, and check that the ones you want are offered at times you can attend.

Are the staff qualified and friendly?

The old post says the instructor should have the patience to work with you, be a professional who can train you safely and know what to do if you have physical limitations. Ask what qualifications the trainers hold, whether they ask about your health and goals, and whether the staff are helpful and friendly. Some facilities also offer a dietitian or physical therapist, which can be useful to you, so ask which services are included.

What programs, classes and equipment does it offer?

Find out which programs interest you, whether there are classes you would enjoy, and ask for a trial class or a free pass. Check that there is enough equipment for all members at busy times, so you do not spend your time waiting for a turn. The old post also advises looking at whether machines and weights are in good working order, since lots of “out of order” signs are a warning, whether modern equipment is available and whether the floors are cleaned regularly. Also see how well lit the building and the parking area are. Our guide to group fitness classes and how to choose will help you decide which kinds of class suit you.

Who are the other members?

The club is also a social place. The old post suggests dropping by to meet members before you enroll, because they may become your workout buddies. Visit at the time you would normally train and ask members what they like and dislike. Search online for reviews too, and compare several sources, because a single review can be unfair either way.

What will it really cost?

Ask for the full membership price and what it covers, as the old post says. The old post warns that some clubs have hidden charges and extra fees for some services, so ask about joining and annual fees, check for promotions or discounts, and find out how long the club has been open and how often it raises its rates. The Federal Trade Commission’s advice on free trials, auto-renewals and subscriptions applies to many gym memberships: read the terms, find out exactly how and when you can cancel, put key dates in your calendar and check your card statements. If a company keeps charging you after you cancel, the FTC advises disputing the charge with your card issuer. Keep a copy of your contract and receipts, and make sure that anything the salesperson promised is written into it.

How does it compare with other clubs?

The old post says not to settle on the first one you visit. Tour at least two or three, make a short comparison list and narrow it down to the places that meet your priorities. The New York State Attorney General’s office gives similar advice on health clubs and gyms: do not give in to high-pressure sales tactics, tell the representative that you need time to think and ask for free passes to find out whether the club is right for you. State laws on gym contracts differ, so check the rules where you live.

What if a club is not for you?

Choosing a club is a bit like shopping for a shirt, as the old post says: take your time and do not be rushed. If the club does not feel right, consider working out at home; our post on buying home fitness equipment explains what to check first. Once you have joined, make the most of it, and read preventing sports injuries for habits that keep you training.

The old version of this post, “7 Tips for Fitness Women,” was a list that opened by asking whether you would like to be an effective fitness woman. The tips were sensible, but the text was hard to follow. This rewrite keeps the seven ideas, checks them against the national guidelines and explains each one more clearly.

1. Does the program fit you?

Every woman is different, and a program that suits one person may be wrong for another. The old post advises consulting a qualified trainer to be sure that the plan will not hurt you. If you have a medical condition, are pregnant or have not been active, check with your health care provider first. MedlinePlus says the same: check with your provider before you start, especially if you have trouble moving or balancing or worry that exercise might not be safe.

2. Are your goals realistic?

Changing your shape in a month is not realistic, and the old post warned that false hopes lead to frustration and injury. Think about what blocks you in daily life, such as time or energy, then set goals and timelines you can meet. The Physical Activity Guidelines for Americans give a starting target: 150 to 300 minutes of moderate aerobic activity a week, plus muscle-strengthening activities on two or more days.

3. Which exercises give the most return?

The old post suggests building muscle with multi-joint exercises, such as squats, rows and presses, and with weights, and says more muscle means you burn more calories. Muscle-strengthening exercise is recommended for all adults, and multi-joint moves save time because they train several muscle groups at once. Extra muscle does raise the calories you burn at rest, but only a little (this is general physiology, not a figure from the sources above), so treat strength training as a way to get stronger and healthier, not a fast route to weight loss. If you are unsure how to do an exercise, ask a trainer to show you. Our guide to full-body workouts shows how to train in two or three sessions a week.

4. Are you making the work harder over time?

Repeating the same exercises with the same weight will give less and less. MedlinePlus’s exercise basics advise building up slowly and challenging yourself by lifting slightly heavier weights, adding minutes or increasing your pace. The old post suggested keeping a daily log so you can see how far you have come, which also helps confidence. A simple notebook or phone note is enough. Increase gradually to protect your joints.

5. How should you perform each repetition?

The old post recommends sets of around 10 repetitions, with as little momentum as possible. Slow, controlled movement makes the muscles do the work instead of swinging. A good check is to see whether you are swinging the weight to lift it. Ten is a starting point, not a rule. What counts is that the last few repetitions feel challenging and your form stays good. For a deeper look at reps and sets, read muscle myths: what the evidence says about reps and sets.

6. Do you vary your workout?

Changing your exercises, goals or sets every so often keeps the work interesting and prevents boredom, as the old post says. MedlinePlus also recommends mixing up your workouts to keep things interesting and help prevent injuries or burnout. Include aerobic, strength, balance and flexibility work, and read preventing sports injuries for habits that keep you training.

7. How do you stay motivated?

The old post says that people stay motivated when they feel a sense of control and ownership, and that you should be consistent and learn to appreciate your own efforts. That fits MedlinePlus’s advice to show up regularly, even for short sessions. There is no program that is best for everybody; pick one you enjoy and adjust as you go. For health habits beyond exercise, such as screenings and sleep, see women’s health habits that matter.

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When you think of sports fitness, you probably picture the games themselves: football, tennis, swimming or running. Sports are a fun way to stay fit, and they are also physically demanding. Unlike general fitness, which is mostly about health, sports fitness is about building the strength, stamina and skill to perform in your chosen activity. Four everyday habits can help you do that.

1. How much should you drink?

Water is the one thing your body cannot do without. When you sweat a lot and do not replace the lost fluid, you risk dehydration and heat illness, which can be serious. Drink before, during and after exercise, and more in hot weather. For most workouts that last less than an hour, water is enough. For long or very intense sessions, or exercise in the heat, a sports drink can help, because it provides carbohydrate for energy and electrolytes such as sodium that you lose in sweat. Many sports drinks are also high in sugar, so you do not need them for a short walk or a gym session. The CDC’s guidance on heat and athletes has practical tips.

2. Why eat more vegetables and fruit?

People who play sports need a good supply of vitamins, minerals and fiber, and vegetables and fruit are among the best sources. They also supply antioxidants and carbohydrate to fuel your activity. Aim to fill half of your plate with them, and add whole grains, beans, nuts and a source of protein. Eating well gives your muscles what they need to recover and helps you to cope with the demands of training. If you are vegetarian, you may enjoy our post on building stronger bones as a veggie.

3. How much calcium do you need?

Strong bones help to prevent stress fractures and other injuries. According to the National Institutes of Health, adults aged 19 to 50 need 1,000 milligrams of calcium a day, and women over 50 and everyone over 70 need 1,200 milligrams. Milk, yogurt and cheese are rich in calcium. If you eat a plant-based diet, good sources include calcium-fortified soy milk and other plant drinks, tofu set with calcium, and some leafy greens such as kale and bok choy. Sardines with their bones are another source for those who eat fish. Food is the best source. The NIH Office of Dietary Supplements lists the amounts you need and encourages you to talk to a health care provider before you take a supplement.

4. Why is warming up so important?

A warm-up prepares the muscles, joints and heart for exercise and lowers the risk of injury. Start with five to ten minutes of light activity, such as jogging in place or an easy bike ride, and then do movements that look like your sport. If you play tennis, swing your arms and rotate your hips. If you run, do some leg swings and lunges. Save long static stretches for after the session, when your muscles are warm. Cool down with some gentle walking, and then stretch.

Putting it together

Sports fitness is a combination of good food, enough fluid, strong bones and a sensible warm-up. Add rest days, sleep and well-fitting gear, and you will be able to enjoy your sport for years. For more advice, see our posts on preventing sports injuries, moderate exercise for fitness and health and fitness.

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Magazines and social media make it easy to believe that fitness means a certain body shape. The people you see are a small and selective sample, and what they show is a look, not a measure of health. Being fit means that your heart, lungs and muscles work well for what you want to do. Here is how to approach it in a way that fits a real life.

Where do you find the time?

Most of us are busy, but the guidelines are more modest than people think. Adults need at least 150 to 300 minutes of moderate-intensity activity a week, which is about 30 minutes on five days at the lower end, plus two days of muscle strengthening. You could walk for half of your lunch break, get off the bus a stop early or train for 30 minutes before the rest of the family wakes up. Even short sessions add up, and the first key message of the Physical Activity Guidelines for Americans is to move more and sit less. For ways to fit it in, see five easy ways to get moving and everyday activities that count as moderate exercise.

Why is the “perfect body” a poor goal?

If your reason for exercising is to look like someone on a poster, you are likely to feel disappointed, because genes, age and body type all influence how you look, whatever you do. Health benefits come from the activity itself. The Physical Activity Guidelines point out that regular activity can reduce anxiety and blood pressure and improve sleep and insulin sensitivity, and that it reduces the risk of excessive weight gain. A more useful goal is something you can measure by what you can do: walking farther, lifting a heavier weight or finishing a class without stopping. If thinking about your body causes you distress or leads you to restrict food or exercise compulsively, talk to a doctor or a mental health professional.

How can you tell that you are getting fitter?

Look at what your body can do. You may walk farther before you tire, climb stairs more easily, or lift a heavier weight than last month. Your resting heart rate is another clue. The American Heart Association says that a resting rate between 60 and 100 beats per minute is normal for most adults, that a very active person may be as low as 40, and that studies link a higher resting heart rate with lower physical fitness, higher blood pressure and higher body weight. Check it in the morning, before you get up, and watch the trend over months, not days.

What should you eat?

There is no secret. The Dietary Guidelines for Americans encourage a pattern built on vegetables, fruit, whole grains, protein foods and healthy oils, with limited added sugars, saturated fat and sodium. What you eat will show in your energy and recovery, not in a single muscle. Our guide to how carbs, fat and protein fit together shows how to balance a plate.

How do you stay positive and consistent?

Treat exercise as something you do for yourself. Pick activities you enjoy, because you will do them more often. Start small, track your progress by what you can do, rest when you need to and be kind to yourself on days when you miss a session. A friend or a class can make it easier; see group fitness classes.

What about becoming a fitness model?

Fitness modeling and competitions are a job, and the training and diet are often very strict and adapted to photo shoots and events. They are a very different thing from the fitness that keeps ordinary people healthy. If you want to try it, talk to a doctor and a qualified coach first, and do not copy extreme diets or training plans.

Gym advice travels fast, and much of it is repeated without ever being checked. A few of the most popular training rules, such as “always do 12 reps,” “three sets is the magic number” and “never let your knees go past your toes,” are worth a closer look. The research is clearer on some of these than you might expect.

Do you need 12 reps to build muscle?

No. A 2017 systematic review and meta-analysis of 21 studies compared low-load training (60 percent of your one-repetition maximum or less) with high-load training. It found that gains in maximal strength were greater with heavier loads, while muscle growth was similar across a wide range of loads. The authors concluded that maximal strength benefits come from heavy loads, while muscle hypertrophy can be achieved equally across a spectrum of loading ranges. Note that in these studies the sets were carried to momentary failure. In practice, it means that a mix of heavier sets of lower reps and lighter sets of more reps is fine, and you can vary them. See the full abstract if you are curious.

Is three sets the rule?

Three sets is a reasonable number, but there is nothing special about it. The 2026 position stand of the American College of Sports Medicine, which summarized 137 systematic reviews with more than 30,000 participants, found that strength was enhanced by 2 to 3 sets, lifting heavier loads (80 percent of one-repetition maximum or more), and training at least twice a week. Muscle growth was enhanced by higher weekly volumes of 10 or more sets. It also found that training to momentary muscle fatigue, equipment type, exercise complexity and set structure did not consistently change results. The simple conclusion is that healthy adults should do progressive resistance training, adding load or volume over time, and keep it up. How you split the work matters less than doing it regularly.

How many exercises per muscle group?

You may have read that three or four exercises per muscle group is too many and that you should do 30 to 50 reps in total. I could not find a source for those specific numbers, and the position stand points the other way: weekly sets matter for growth. If you are a beginner, one or two exercises per muscle group, done well, are plenty. Add sets later as you progress.

Should your knees stay behind your toes?

This is one of the oldest gym rules, and a 2003 study tested it. Researchers had seven weight-trained men do parallel barbell squats with and without a barrier that stopped the knees moving past the toes. When the knees were restricted, knee torque fell from about 150 to 117 newton-meters, but hip torque rose from about 28 to 303 newton-meters, and the trunk leaned further forward. The authors concluded that restricting the knees may reduce stress on the knees, but forces are probably transferred to the hips and low back, and that proper joint loading during the squat may require the knees to move slightly past the toes. This was a small study of seven men, so treat it as a reminder that technique is about balance, not a single rule. Read the study abstract.

What should you do instead?

Use a weight you can control, keep a full range of motion, increase the load gradually and stop a set if your form falls apart. If you have a joint problem or an old injury, ask a doctor or a qualified trainer to check your squat. For a plan to follow, see full-body workouts in two or three sessions a week, and fitness for men: cardio, strength and safer training for more on safe training. Our guide to preventing sports injuries has twelve habits worth building.

Fiction of Muscle