Water aerobics is one of the most accessible and effective forms of exercise available. If you have been thinking about trying it but are not sure what to expect, this guide covers everything – from the basic exercises and health benefits to what to wear and how your first class will go.
The beauty of water aerobics is that it works for almost everyone. It does not matter if you are 25 or 75, a former athlete or completely new to exercise, recovering from surgery or training for a marathon. The water supports your body, reduces impact on your joints, and provides natural resistance that builds strength without the strain that comes with land-based workouts.
What Is Water Aerobics?
Water aerobics (also called aqua aerobics, aqua fitness, or water exercise) is a group fitness class performed in a swimming pool, usually in chest-deep water. An instructor leads the class through a series of exercises that combine cardiovascular training, strength building, and flexibility work – all performed against the natural resistance of the water.
Most classes run 45 to 60 minutes and use a combination of walking, jogging, jumping, arm movements, and core exercises. Some classes incorporate equipment like foam dumbbells, pool noodles, kickboards, and resistance gloves. Music is common, though not universal.
The key difference from swimming is that you do not need to know how to swim. Water aerobics is performed standing up in water that is typically waist-deep to chest-deep. Your feet stay on the pool bottom for most exercises, and your head stays above water the entire time.
Health Benefits
Water aerobics delivers a wide range of health benefits, many of which are unique to exercising in water.
Low Impact, High Reward
Water buoyancy reduces the effective weight on your joints by up to 90 percent. This means you can perform exercises that would be painful or impossible on land – jumping, jogging, squatting – without the jarring impact that causes joint pain and injury. This makes water aerobics particularly valuable for people with arthritis, chronic pain, joint replacements, or obesity. If you are dealing with arthritis specifically, our water exercises for arthritis guide covers routines tailored to managing joint pain and stiffness.
Despite being low-impact, water aerobics is not low-intensity. Water provides 12 to 14 times more resistance than air, so every movement works your muscles harder than the same movement on land. You get a strength-building workout and a cardio workout simultaneously.
Cardiovascular Fitness
Water aerobics elevates your heart rate and improves cardiovascular endurance. The hydrostatic pressure of the water (the pressure the water exerts on your body) actually helps your circulatory system work more efficiently. Your heart pumps more blood per beat in water than on land, which means you can achieve a good cardiovascular training effect at a lower heart rate than you would on land.
Research has consistently shown that regular water aerobics improves aerobic capacity, lowers resting blood rate, and reduces blood pressure.
Strength Building
Every movement in water works against resistance in all directions. When you push your arm forward through the water, the water resists. When you pull it back, the water resists again. This creates a balanced strengthening effect that works opposing muscle groups equally – something that is difficult to achieve with land-based exercises without specifically programming it.
For a deeper dive into how water resistance builds fitness, see our aquatic training guide. You can also explore our dedicated water resistance exercises guide for targeted strength-building moves that use nothing but the water itself. The resistance also scales naturally with effort. Move faster and the resistance increases. Move slower and it decreases. This means beginners and advanced exercisers can perform the same exercises at different intensities in the same class.
Flexibility and Range of Motion
The buoyancy and warmth of pool water (most water aerobics pools are heated to 82-86 degrees Fahrenheit) help relax muscles and increase joint mobility. Many people find they can move through a greater range of motion in water than on land, which gradually improves overall flexibility.
Balance and Coordination
The water’s instability challenges your balance in ways that land exercise does not. Standing on one leg in water requires constant small adjustments from your core and stabilizer muscles. Over time, this improved balance translates to better stability on land, which is particularly important for older adults concerned about fall prevention.
Mental Health
Like all forms of exercise, water aerobics releases endorphins and reduces stress hormones. But there is something uniquely calming about being in water. The sensation of buoyancy, the sound of water, and the temperature change all contribute to a relaxation effect that many participants find more pronounced than land-based exercise. For more on this, check out our article on the benefits of water sports for mental health.
Basic Water Aerobics Exercises
You do not need to wait for a class to try water aerobics. Here are foundational exercises you can do in any pool that has at least waist-deep water.
Water Walking and Jogging
Start by walking forward through the water at a brisk pace. Swing your arms naturally, just like walking on land. The water resistance makes this simple movement surprisingly effective. Once you are comfortable, increase to a jogging pace, lifting your knees higher and pumping your arms harder.
Try walking forward, backward, and sideways to work different muscle groups. Walking backward in water works your hamstrings and glutes more than forward walking.
Jumping Jacks
Stand with your feet together and arms at your sides. Jump your feet out wide while raising your arms overhead, then jump back to the starting position. The water slows the movement down and cushions the landing, making it far easier on your knees than jumping jacks on land while still providing excellent cardio.
Leg Kicks
Hold onto the pool wall or a kickboard for balance. Kick one leg forward to hip height, then sweep it back behind you. Repeat 10 to 15 times per leg. Keep your core tight and your standing leg slightly bent. This exercise works your hip flexors, quadriceps, glutes, and hamstrings.
For a side-kick variation, kick your leg out to the side and bring it back across your body. This targets your inner and outer thighs.
Arm Curls
Stand in chest-deep water with your arms at your sides, palms facing forward. Curl both arms up toward your shoulders, then push them back down. The water resists both the upward and downward movement, working your biceps and triceps without needing any weights.
For more resistance, use foam dumbbells (water weights) or simply spread your fingers wide to increase the surface area pushing against the water.
Core Twists
Stand with your feet shoulder-width apart. Extend your arms in front of you at the water surface. Rotate your torso to the right, sweeping your arms through the water, then rotate to the left. Keep your hips facing forward and initiate the movement from your core. The water resistance makes this a surprisingly intense core exercise.
Flutter Kicks
Hold onto the pool wall with both hands, extend your body behind you on the water surface, and kick your legs in a rapid flutter motion. This is essentially a swimming kick without going anywhere. It works your core, hip flexors, and legs while also providing good cardiovascular intensity.
Water Push-Ups
Stand facing the pool wall at arm’s length. Place your hands on the pool edge or the deck. Lean in toward the wall, bending your elbows, then push yourself back to the starting position. This is the water equivalent of a push-up and works your chest, shoulders, and triceps. The water makes the movement easier than a land push-up, making it a great starting exercise for building upper body strength.
What to Expect at Your First Class
Finding a Class
Most community pools, recreation centers, YMCAs, and gym chains with pools offer water aerobics classes. If you have your own pool, keeping up with a regular pool maintenance schedule ensures the water is always clean and ready for your workouts. Call ahead to ask about schedule, cost, and skill level. Many facilities offer specific classes for different populations – general fitness, seniors, prenatal, rehabilitation, and high-intensity.
For your first time, choose a beginner or general fitness class rather than an advanced or high-intensity option.
What to Wear
Wear a comfortable swimsuit that allows free movement. One-piece suits are more practical than bikinis because they stay in place during jumping and kicking exercises. Board shorts and a swim top work well too.
Water shoes are optional but helpful. They provide traction on the pool bottom and protect your feet. If you do not own water shoes, bare feet are fine for most pools.
Goggles are not necessary since your face stays above water, but prescription swim goggles can help if you wear glasses and want to see the instructor clearly.
Bring a towel, a water bottle (yes, you need to hydrate even though you are in water), and sunscreen if the pool is outdoors.
What to Bring
Most pools provide any equipment used in class (foam dumbbells, noodles, kickboards). Ask when you sign up so you know whether you need to bring anything.
During the Class
The instructor will stand on the pool deck or in the water, demonstrating exercises. The class typically follows this structure:
Warm-up (5-10 minutes): gentle water walking, easy arm movements, light stretching.
Cardio section (15-20 minutes): higher-intensity movements like water jogging, jumping jacks, cross-country ski movements, and lateral shuffles.
Strength section (10-15 minutes): targeted exercises for arms, legs, and core, often using foam dumbbells or noodles.
Cool-down (5-10 minutes): slower movements, stretching, and deep breathing.
Intensity Expectations
Your first class will probably feel easier than you expect during the workout and harder than you expect afterward. The water keeps you cool, so you do not feel yourself sweating. But the muscles know they worked. A mild soreness the next day is normal after your first class.
Start at your own pace. A good instructor will offer modifications for every exercise – an easier version and a harder version. Use the easier version your first few classes and progress as you build confidence and fitness.
Frequently Asked Questions
Do I need to know how to swim for water aerobics?
No. Water aerobics is performed standing up in waist-deep to chest-deep water. Your feet are on the pool bottom and your head stays above water the entire time. You do not need any swimming ability. Some classes may briefly use the deeper end for suspended exercises (where your feet leave the bottom), but the instructor will always offer an alternative for non-swimmers.
How many calories does water aerobics burn?
Water aerobics burns approximately 400 to 600 calories per hour for a person weighing 155 pounds, depending on the intensity of the class and the individual’s effort level. This is comparable to moderate-intensity land exercises like brisk walking or cycling. For comparison, check our article on swimming workouts that burn more calories than running.
How often should I do water aerobics?
For general fitness benefits, 2 to 3 sessions per week is a good target. This allows adequate recovery time between workouts while providing enough frequency to see improvements in cardiovascular fitness, strength, and flexibility. More advanced participants often go 4 to 5 times per week.
Is water aerobics good for weight loss?
Yes. Water aerobics provides both cardiovascular exercise (which burns calories) and resistance training (which builds muscle). Building muscle increases your resting metabolic rate, meaning you burn more calories even when you are not exercising. Combined with a balanced diet, regular water aerobics is an effective tool for weight management.
Is water aerobics only for older adults?
Absolutely not. Water aerobics has a reputation as a senior fitness activity, but it is effective for all ages and fitness levels. Professional athletes use water-based training for recovery and cross-training, and those looking to swim faster often incorporate pool exercises into their routine. Prenatal water aerobics is popular among pregnant women. High-intensity water fitness classes (sometimes called “aqua HIIT”) challenge even the fittest participants. The water does not care how old you are – it provides resistance based on how hard you push. On days when you want something more social, try some pool games for adults to keep your pool time fun and active.
What if I am overweight or out of shape?
Water aerobics is one of the best exercises for people who are overweight or deconditioned. The buoyancy of the water supports your body weight, reducing stress on your joints and making movement easier and less painful than land exercise. Many people who cannot comfortably walk for 30 minutes on land can exercise for a full hour in the water. Start at your own pace, take breaks as needed, and let the water do some of the work for you.