Swimming & being in water

In water, your body feels much lighter. Joints that ache on land often feel easier, and moving can feel gentle rather than hard work.

For many people, that feeling of being held is soothing in itself. It can feel like a pause from carrying everything.

Swimming has a built-in rhythm. Your breathing has to match your strokes, which slows and steadies it. Many swimmers describe this as calming, almost like meditation.

Time in water is one of the few places most of us are truly unreachable. No notifications, no news, no messages: just you, the water and your breath.

With your ears under the surface, noise fades. You notice the cool or warm water on your skin, the light on the bottom of the pool, the bubbles of your own breath. Paying attention to the senses is a simple way to come back to the present.

In the 2022 review, light and moderate water exercise was linked to better mental health, but high-intensity sessions were not. Light water aerobics looked the most helpful of all.

Water aerobics showed a clear benefit in the review. The results for lap swimming pointed in a good direction but were less certain, because there were fewer and more mixed studies.

If you don’t enjoy swimming lengths, a water exercise class may suit you better. Many are social, playful and set to music.

The reviewers found big differences between studies and some risk of bias. They could not say for sure which type, length or amount of water exercise works best, or for whom.

Try this

1. Count each stroke from 1 to 10, then start again.
2. If you lose count, just begin again at 1.
3. Notice how your breathing settles into the counting.

Breathing out slowly through your nose or mouth while your face is in the water can feel calming. Notice the stream of bubbles.

Ask yourself

• What can I feel? (water on my skin, the push of each stroke)
• What can I hear? (bubbles, splashes, muffled voices)
• What can I see? (light, tiles, sky)
• What can I smell or taste? (chlorine, salt, fresh air)

Floating on your back with your arms and legs spread like a star lets the water hold you. Breathe slowly and notice the sky or ceiling.

If floating is hard at first, try holding a float or the pool edge, or ask an instructor to help.

A 2025 review of 11 trials of cold-water immersion (baths or showers at 59°F/15°C or colder) found lower stress 12 hours afterward, and some improvements in sleep quality and quality of life. It found no clear change in mood.

The authors said the evidence is limited by few trials, small groups and a lack of diversity, and that better studies are needed.

A separate review of water exercise found winter swimming had little effect on mental health.

Open-water swimmers often talk about the friends they swim with, the sunrise over the water, and the pride of getting in on a cold morning. These things matter, even if science can’t yet measure exactly how much.

The National Weather Service says cold shock can cause gasping and fast breathing in the first 2 to 3 minutes, which can lead to breathing in water. It can also spike heart rate and blood pressure.

Water from 50 to 60°F (10–15°C) can cause cold shock as strong as near-freezing water, and gasping can start in water as warm as 77°F (25°C).

Safety basics

• Check the weather forecast before you go
• Choose places with lifeguards when you can
• Never swim alone; go with a buddy or group
• Wear a life jacket for boating or paddling, and if you’re a weaker swimmer

Habits many open-water swimmers use

• Enter slowly and let your breathing settle before you start swimming
• Stay close to the shore until you know the water
• Wear a bright swim cap so others can see you
• Have warm clothes ready for afterward

If you fall into cold water unexpectedly, the National Weather Service advises staying calm, getting out as soon as you safely can, and if you can’t, keeping still with your knees drawn to your chest to save heat while you wait for help.

A review of 17 studies found that a warm bath or shower of about 104–108°F (40–42.5°C), taken 1 to 2 hours before bed, was linked to better sleep quality and falling asleep faster. Even 10 minutes helped.

The researchers think it works by helping your body cool down afterward, which is a natural signal for sleep. They said more research is needed.

Float tanks are filled with warm, very salty water so you float easily, in a quiet, dark space. In one small study of 50 people with anxiety, a single one-hour float greatly reduced anxiety and improved mood right afterward.

This was one early study without a comparison group, and it only looked at short-term effects. The researchers said larger, controlled trials are needed.

The CDC notes that water-based exercise can help people with arthritis use their joints better and reduce pain, and that for people with fibromyalgia, swimming can ease anxiety and warm-water exercise can ease depression.

Many hospitals, community centers and physical therapy clinics have warm-water pools and classes.

Some people had a frightening experience in water as a child. Others picked up fear from parents who couldn’t swim either. Some just never had the chance to learn, so water feels unknown.

When fear of water is intense and stops you from doing things you want to do, it may be a phobia. Phobias respond well to gradual, step-by-step practice, sometimes with a therapist.

A gentle ladder (move on only when the step feels okay)

1. Sit on the edge and put your feet in.
2. Stand in shallow water, holding the side.
3. Walk across the shallow end.
4. Blow bubbles with your mouth at the surface.
5. Put your face in for a few seconds.
6. Float with a noodle or board, with someone beside you.
7. Take a lesson to learn your first strokes.

Many pools, community centers, YMCAs and city recreation departments offer adult beginner lessons, sometimes free or low-cost. Some run classes just for nervous swimmers, women or older adults.

Questions to ask

• Is there a class for adult beginners or nervous swimmers?
• How many people are in a class?
• Is the shallow end deep enough to stand in?
• Can I watch a class before I join?

The CDC says formal swim lessons can lower drowning risk for children, but even children who have had lessons need close, constant supervision near water.

If you can’t swim yourself, learning alongside your child can be a powerful, shared step.

Feeling self-conscious in a swimsuit is very common, for people of every size, shape and gender. Remember that the water is there for your enjoyment, not anyone’s judgment.

Things that can help

• Go at a quieter time
• Wear what makes you comfortable, like swim shorts, leggings or a swim shirt
• Bring a towel or robe for the walk to the pool
• Go with a friend
• Focus on how the water feels, not how you look

Many pools now offer women-only or family sessions, and full-coverage swimwear is widely available. Ask your local pool what options they have.

The CDC encourages pools to offer culturally welcoming lessons and to hire diverse staff, so more people feel at home in the water.

Ways to swim with others

• Adult “masters” swim clubs, which welcome all levels, not only fast swimmers
• Open-water or sea swimming groups
• Water aerobics or aqua-fitness classes
• Family swim sessions
• Swimming with a friend once a week

The CDC says strong social connection can lower the risk of depression and anxiety. A regular swim with others adds friendship to the benefits of moving.

The CDC says water-based exercise can help people with arthritis improve the use of their joints and reduce pain without making symptoms worse.

Living with long-term pain can wear down your mood. Finding a way to move that doesn’t hurt can bring back a sense of freedom.

The CDC notes that water-based exercise can improve older adults’ quality of life.

Water aerobics classes are often friendly, social places. For people who live alone, the conversation in the pool can matter as much as the exercise.

Pool hoists, ramps, warm water and trained instructors make swimming possible for many disabled people. Some clubs offer adaptive or para swimming for every level, from beginner to competition.

Call ahead to ask about access, changing facilities and quieter sessions. Sensory-friendly sessions may suit autistic people or anyone who finds busy pools overwhelming.

If you have a health condition, are recovering from surgery or are pregnant, ask your clinical provider or physical therapist what kind of water activity is right for you.