When we walk, the natural inclination is to keep the arms straight and swing them. When we run, we bend the arm. Now some clever people at Harvard decided to test what the best approach is and it ...

Good news: You don't need all of the cable machines at the gym to sculpt yourself some biceps and triceps that pop! Actually, it's way easier to get an amazing arms workout at home than you think!

Wandering through the Harvard campus one day in 2015, graduate student Andrew Yegian recalls how something unusual caught his eye. 'I noticed a person running with straight arms', he explains. This ...

Have you ever tried running with your arms straight? Most people find it quite a challenge, so it comes as a surprise to learn that it doesn’t require more energy than running with bent arms. Running ...

Do you pump your arms while walking? Keeping your arms straight while walking is much more energy-efficient than walking with bent arms, but arm position doesn't make much difference when running, a ...

Stand with your feet less than shoulder-width apart with a three-to five-pound dumbbell in each hand. Bend your elbows 90 degrees with your palms facing each other (A). Maintaining the 90-degree angle ...

When it comes to upper-body day vs lower-body day at the gym, everyone has a favorite, right? But whether you look forward to squats and deadlifts or push-ups and bicep curls, the key to a balanced, ...

Rozalynn S. Frazier is an award-winning, multimedia journalist, NASM-certified personal trainer, and behavior change specialist living in New York City. You can try these 27 exercises to strengthen ...