Credit: Shutterstock If you’ve ever done a high-intensity interval training (HIIT) workout, you know it’s no joke. Sprints, ...
Exercise guidelines tell us how many minutes of aerobic activity we should get every week, but there aren’t similar suggestions for how long the twice weekly recommended strength-training sessions ...
In TODAY.com's Expert Tip of the Day, a trainer explains how incorporating HIIT into a weekly workout routine can boost one's ...