Glassfrogs hide red blood cells in their liver to become transparent

Glassfrogs make themselves transparent while they rest by taking red blood cells from circulation and concealing them in their livers. A multi-disciplinary team of biologists and biomedical engineers has shown how these frogs make themselves...

The Battle of Brains vs. Brawn (Published 2017)

If you think hard and exercise intensely at the same time, your muscles’ performance will decline much more than your brain’s will, a new study found.

As Workouts Intensify, a Harmful Side Effect Grows More Common (Published 2017)

Newbies to spin classes can land in the emergency room, as doctors say they are seeing more of the rare but dangerous rhabdomyolysis.

How My Desire to Run Again Pushed Me to Walk

After recovering from a traumatic brain injury, a writer seeks to reclaim the mental transcendence that comes from running.

An Anti-Aging Pill? Think Twice (Published 2019)

The diabetes drug metformin, sometimes taken to slow aging, may blunt the health benefits of exercise.

How ‘Muscle Confusion’ Might Help Your Workouts (Published 2020)

Shifting, quicksilver workouts may yield mental benefits that more rote regimens do not.

Regular Exercise May Keep Your Body 30 Years ‘Younger’ (Published 2018)

The muscles of older men and women who have exercised for decades are indistinguishable in many ways from those of healthy 25-year-olds.

Taking Up Running After 50? It’s Never Too Late to Shine (Published 2019)

People who start running competitively in their 50s can become as swift and well-muscled as older runners who have trained lifelong.

Lift Weights, Eat More Protein, Especially if You’re Over 40 (Published 2018)

Eating more protein can significantly augment the effects of lifting weights, a review of research found.

25 Again? How Exercise May Fight Aging (Published 2019)

The muscles of those who worked out looked like those of 25-year-olds and showed less of the inflammation that is tied to health problems as we age.

How Exercise May Help Keep Our Memory Sharp

Irisin, a hormone produced by muscles during exercise, can enter the brain and improve cognition, a mouse study suggests.

Why Lifting Weights Can Be So Potent for Aging Well (Published 2019)

People who discovered that they enjoyed and felt capable of completing a weight-training session subsequently joined a new gym and showed up for workouts.

Using Tai Chi to Build Strength (Published 2018)

Tai chi moves can be easily learned and executed by people of all ages and states of health, even elderly people in wheelchairs.

Is an Exoskeleton Suit in Your Future?

Scientists are developing devices and clothing that make running and walking easier and more enjoyable.

Exercise Vigorously for 4 Seconds. Repeat. Your Muscles May Thank You.

High-intensity interval training has surprising benefits for fitness and physical power, but don’t stay seated the rest of the day.

He Was Coughing Up Blood. The First Place to Look Was His Lungs.

But the obvious place to look isn’t always the right place.

Lifting Weights? Your Fat Cells Would Like to Have a Word.

A cellular chat after your workout may explain in part why weight training burns fat.

It’s Cold in the Ocean but It’s Hotter Inside Sea Otters

To stay warm in frigid seas, the marine mammals rely on an unexpected use of the powerhouses of their cells.

How Weight Training May Help With Weight Control

People who regularly do muscle-strengthening exercises are about 20 to 30 percent less likely to become obese over time than people who do not.