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Byline: Gretchen Reynolds In a study done with mice, horses and people, researchers found clues as to which types of exercise suppress appetite and why. Why are we so peckish [...]

Byline: Gretchen Reynolds Science says you may need less exercise than you think to live a long and healthy life. For anyone interested in the relationship between exercise and living [...]

Byline: Gretchen Reynolds In her new book, Jennifer Heisz blends personal experience and the latest science about how exercise can improve your mental well-being. When Jennifer Heisz was in graduate [...]

Byline: Gretchen Reynolds and Brown Bird Design It's the one exercise most of us should be doing. But we need to do it right. What is the single best strength-building [...]

Byline: Gretchen Reynolds Men and women who briefly contracted their arm muscles as hard as possible once daily increased their biceps strength by up to 12 percent in a month. [...]

Byline: Gretchen Reynolds The need for healthy, active grandparents who can help with child-rearing may be encoded in our genes. Why is physical activity so good for us as we [...]

Byline: Gretchen Reynolds Ten minutes of moderate exercise daily would prevent more than 111,000 premature deaths a year, a new analysis found. If almost all of us started walking for [...]

Byline: Gretchen Reynolds Working out at different times of the day might have unique benefits for health, an ambitious new study in mice suggests. Morning exercise has very different effects [...]

Byline: Gretchen Reynolds Muscles develop a lasting molecular 'memory' of past resistance exercises that helps them bounce back from long periods of inactivity. After two years of Covid-19 and its [...]

Byline: Gretchen Reynolds A new analysis of data from 'The Biggest Loser' highlights the complex ways the body compensates when we drop pounds. Many of us remember 'The Biggest Loser,' [...]

Byline: Gretchen Reynolds Among 52 incentives to exercise, giving people a 9-cent award if they returned to the gym after missing a workout helped the most. Receiving a tiny monetary [...]

Byline: Gretchen Reynolds Simple activities like walking boost immune cells in the brain that may help to keep memory sharp and even ward off Alzheimer's disease. Staying physically active as [...]

Byline: Gretchen Reynolds More than 46,000 cancers in America each year, or about 3 percent of cases, could be prevented by meeting physical activity guidelines. More than 46,000 cancer cases [...]

Byline: Gretchen Reynolds What you need to know about high-intensity interval training, or HIIT. For the past five years or so, high-intensity interval training, or HIIT, has been one of [...]

Byline: Gretchen Reynolds How to Exercise With Chronic Pain For 25 years, Wei Liu had been practicing and teaching tai chi, including to people suffering from chronic knee pain, believing [...]

Byline: Gretchen Reynolds Our bodies compensate for at least a quarter of the calories we expend during exercise, undermining our best efforts to lose weight by working out. For every [...]

Byline: Gretchen Reynolds Scientists are developing devices and clothing that make running and walking easier and more enjoyable. Those of us who are slow or reluctant runners or walkers might [...]

Byline: Gretchen Reynolds Falling during skateboarding or other activities does not have to end in serious injury. Olympic athletes, coaches and scientists tell us how. During the inaugural men's and [...]

Byline: Gretchen Reynolds A cellular chat after your workout may explain in part why weight training burns fat. We all know that lifting weights can build up our muscles. But [...]

Byline: Gretchen Reynolds 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. Lifting weights a [...]

Byline: Gretchen Reynolds As record high temperatures batter much of the country, expert advice on staying active this summer. The summer of 2021 came in sizzling, with June temperatures in [...]

Byline: Gretchen Reynolds People who start to exercise before or during middle age typically save from $824 to $1,874 annually on health care costs after retirement. Becoming more physically active [...]

Byline: Gretchen Reynolds Researchers are studying the proteins in blood to learn why some of us respond to certain forms of exercise better than others. If we all begin the [...]

Byline: Gretchen Reynolds Late-day exercise had unique benefits for cholesterol levels and blood sugar control, a study of overweight men eating a high-fat diet found. Evening exercise may be more [...]

Byline: Gretchen Reynolds Physical activity during pregnancy might have long-lasting benefits for a child's health, new research suggests. The lifestyles of soon-to-be mothers and fathers could shape the health of [...]

Byline: Gretchen Reynolds After a particularly vigorous workout or sports injury, many of us rely on ice packs to reduce soreness and swelling in our twanging muscles. But a cautionary [...]

Byline: Gretchen Reynolds A new study hints that excessive HIIT may harm your mitochondria, the energy generators found in every cell of your body. If high-intensity exercise is good for [...]

Byline: Tara Parker-Pope and Gretchen Reynolds Indoor fitness classes, which often result in heavy breathing in poorly ventilated rooms, can be risky. Here's a guide to help you decide if [...]

Byline: Gretchen Reynolds For years we've been crediting endorphins, but it's really about the endocannabinoids. We can stop crediting endorphins, the natural opioid painkillers produced by our bodies, for the [...]

Byline: Gretchen Reynolds Sedentary, older adults who took aerobic dance classes twice a week showed improvements in brain areas critical for memory and thinking. Exercise can change how crucial portions [...]

Byline: Gretchen Reynolds To spur innovation and ideas, try taking a walk. If you often exercise, there's a good chance you also tend to be more creative, according to an [...]

Byline: Gretchen Reynolds Men at risk for diabetes had greater blood sugar control and lost more belly fat when they exercised in the afternoon than in the morning. Is it [...]

Byline: Gretchen Reynolds Four seconds of intense intervals, repeated until they amount to a minute of total exertion, led to rapid improvements in strength and fitness in middle-aged and older [...]

Byline: Gretchen Reynolds Overweight men and women who exercised six days a week lost weight; those who worked out twice a week did not. Can exercise help us shed pounds? [...]

Byline: Gretchen Reynolds The sweet spot for physical activity and longevity seemed to arrive at about 35 minutes a day of brisk walking or other moderate activities. Walking for at [...]

Byline: Gretchen Reynolds Two new studies found little downside to donning masks during vigorous exercise. And wearing a mask may do much good. Exercising during the pandemic has been challenging [...]

Byline: Gretchen Reynolds Working out may enhance the immune system's ability to target and eradicate cancer cells, a study in mice suggests. Exercise may help to fight cancer by changing [...]

Byline: Gretchen Reynolds A basic program of lunges, lifts, squats and crunches eased anxiety levels in healthy young men and women. Roiled by concerns about the pandemic and politics? Lifting [...]

Byline: Gretchen Reynolds Runners must decide whether we feel comfortable racing in-person and, if so, how we can best protect ourselves and others. Competitive runners could soon face a familiar [...]

Byline: Gretchen Reynolds Running pummels knees more than walking does, but in the process it may fortify and bulk up cartilage, helping stave off knee arthritis. Could running actually be [...]

Byline: Gretchen Reynolds Many inactive adults who tried a sampling of exercises preferred intense efforts to gentler workouts. People who have never tried intense interval training might be surprised to [...]

Byline: Gretchen Reynolds Many of us have been moving less since the pandemic began. But some, including many older men and women, seem to be moving more. Are you exercising [...]

Byline: Gretchen Reynolds Older men and women who took a fresh look at the objects and vistas around them felt more upbeat and hopeful. Consciously watching for small wonders in [...]

Byline: Gretchen Reynolds Fast or slow? Is there a time limit? Can we bring the dog along? Expert advice for working out when the smoke gets in your eyes - [...]

Byline: Gretchen Reynolds A small study found signs of heart inflammation in some college athletes who had coronavirus, but the link needs further investigation. In a new study of 26 [...]

Byline: Gretchen Reynolds Regular exercise helped lab mice remain psychologically resilient even when their lives seemed filled with threats. Exercise makes it easier to bounce back from too much stress, [...]

Byline: Gretchen Reynolds Older people who cycled for exercise walked more efficiently than people whose primary exercise is placid walking. If we want to walk easily and well as we [...]

Byline: Gretchen Reynolds Two new studies shed light on whether pedal-assisted electric bikes provide good exercise, and how safe (or unsafe) they might be. Is riding an e-bike good exercise? [...]

Byline: Gretchen Reynolds Early risers did the equivalent of walking 20 to 30 minutes more each day compared to 'evening types,' who tend to stay up late. People who are [...]

Byline: Gretchen Reynolds Eating a diet high in sugar and processed foods could dent our long-term health in part by changing how well our bodies respond to exercise. People with [...]