Walking might seem like a simple daily activity, but it can have a powerful impact on your weight and overall health. As a ...

Marc is a freelance contributor to Newsweek’s investing team. He is a Certified Personal Finance Counselor and a frequent runner who aims to complete more than 100 marathons in his lifetime.

Marc is a freelance contributor to Newsweek’s investing team. He is a Certified Personal Finance Counselor and a frequent runner who aims to complete more than 100 marathons in his lifetime.

Jennifer Rizzuto is a freelance fitness journalist based in New York, NY. She’s been a NASM-certified personal trainer, corrective exercise specialist, and performance enhancement specialist for over ...

Heck, entire programs have been written around many of these exercises—they’re that popular. However, as a veteran personal trainer with more than 30 years of experience, I have learned that there is ...

I'm a certified personal trainer and I can’t stress the importance of core training enough. A strong core supports every movement we make—from walking and lifting to balancing and even breathing. It's ...

and certified personal trainer. She is a diplomate of the American College of Lifestyle Medicine and has a master's degree in nutrition and exercise physiology from Columbia University.

"It's effective for muscle growth, because of the total volume you're doing," says DJ Zmachinski, certified personal trainer at Life Time Rosemount. Volume is usually sets x reps, but density ...