In TODAY.com's Expert Tip of the Day, a trainer reveals the only body part you should consider working out even on rest days.

How often should you exercise? Working out every day can aid in weight loss and improve mental health, but it depends on ...

"Waiting to work out after eating will also improve your digestion of food," adds Barbara Olendzki, associate professor of population and quantitative health sciences at UMass Chan Medical School.

How often you should work out depends on several factors, like your activity level, age, fitness goals, and more. It's generally important to get 150 minutes of moderate aerobic (cardio) exercise ...

The best time to exercise is any time you’re able to work out and get your heart pumping, but certain times of day offer extra health benefits.

Working out before bed can make it harder to sleep. Here, experts explain why, the best time to work out, and the best ...

Then I work until about 5:30 p.m., but I take a few coffee breaks between lunch and the end of the day to get out of what I call my "post-lunch slump." For this experiment, I'd only go midday.

Gradually work up to higher intensity exercise. If your idea of a squat is what you do to get down to a toilet seat, you shouldn't run out and do hundreds of squats in a gym the first time.

Multi-sport athletes, such as triathletes, may have to work out twice a day in order to get in all their necessary training. But Buckingham says that even if you're not doing it for the athletic ...

Work out with a partner in case one of you starts to feel sick. Even if you don’t feel yourself sweating as you exercise, drink lots of water, Dr. Kenny said.