Meryl Streep does not have a 14-step biohacking routine, a cold plunge in the backyard or a stealth Pilates studio under her kitchen. At 67, she picked something much more old-school: she started swimming a mile almost every day.
It is not flashy. It is not fast. But at 76, she is still in the pool, logging long, thoughtful laps while the rest of us debate whether to redownload a workout app. Her habit is deceptively simple – and the science on why it works for healthy aging is surprisingly stacked.
Inside Meryl Streep’s Mile a Day Habit
In interviews, Streep has said that she tries to swim about a mile a day – roughly 55 laps in a standard pool. “I try to swim a mile every day because I like the feeling and it gets me into my body,” she says. The pool, for her, is part workout, part meditation studio.
A mile in the water is around 1,600 meters. For an easy, conversation-pace swimmer, that can mean 40 to 50 minutes of steady movement. Not a sprint, not a boot camp, just rhythmic strokes, breathing and thinking time. She has also been clear that the goal is feeling well, not chasing a clothing size.
That detail matters. When the motivation shifts from “shrink” to “function,” you stop negotiating with yourself about perfection and start negotiating about consistency – which is exactly where low-impact swimming shines for women in their 60s and 70s.
Why Low Impact Swimming Is a Power Move After 60
Cardiologists love this kind of workout: moderate, rhythmic, easy on joints, tough on boredom. Your heart rate rises, your lungs work, blood vessels stay flexible – all without the sharp impact of running or the blood-pressure spikes that can come with unsupervised high-intensity intervals later in life.
Water also picks up most of the heavy lifting. Depending on depth, it can support up to about 90 percent of your body weight, which means your knees, hips and spine are spared the pounding that often makes midlife gym resolutions fizzle by March. You still get the training effect; you just ditch a lot of the pain tax.
6 Reasons Meryl’s Swim Is a Healthy Aging Secret Weapon
It Builds Serious Cardiovascular Endurance
Studies on adults in their 60s and 70s show that 12 to 16 weeks of regular swimming improve six-minute walk tests and overall stamina. Translation: climbing stairs, walking airport terminals and carrying groceries all feel less heroic. A stronger heart also lowers risk of cardiometabolic issues that derail independence later on.
It Protects Sore Joints While You Get Fitter
Because water carries so much of your weight, joints with arthritis or old injuries are cushioned while you move. Research on people with osteoarthritis found that swimming eased pain and stiffness, making it easier to stay active at all. Think of the pool as strength training in a supportive, liquid exoskeleton.
It Helps Fight Age Related Muscle Loss
From about age 30, we naturally lose an estimated three to five percent of muscle mass per decade if we do nothing about it. Full-body strokes recruit legs, glutes, core, back and shoulders in one session, helping slow that slide into weakness. Stronger muscles mean better balance, faster reactions and more independence.
It Keeps Your Brain Sharper And Calmer
Swimming increases blood flow to the brain and supports neurotransmitters linked to mood and mental clarity. Streep has talked about doing much of her thinking in the pool; science backs that up. Regular laps are like a moving mindfulness session that also nudges down anxiety and improves sleep quality.
It Improves Flexibility, Balance And Everyday Movement
The water lets joints travel through a fuller range of motion than many land-based workouts. Over time, that can mean easier bending, twisting, reaching and turning your head when you back out of a parking spot. Better mobility and balance together cut your risk of falls – one of the biggest threats to healthy aging.
It Helps Lower Chronic Disease Risk
Regular swimming has been linked to better insulin sensitivity, healthier cholesterol patterns and more stable blood pressure. Those shifts lower the odds of type 2 diabetes and hypertension – two conditions that quietly age your heart, eyes and brain long before you see outward changes.
