Nailing this classic ab exercise can help you with daily activities and prevent back pain. Read on for tips on form, how often to do crunches, and more.

A well-rounded ab workout will strengthen your core, tone your midsection and help prevent and reduce back pain.

Stand tall with your hands behind your head. Bring your left knee up to meet your right elbow in a standing crunch. Hold the position and pulse the knee and elbow together for three mini-reps. Return ...

Here are the training principles you need to know to reveal your six-pack—and exercises to put them into practice.

Training for your goals is about more than one muscle group. This program will lead you to well-rounded gains.

Mark Wahlberg’s 14-pound weight loss came down to hardcore strength-training sessions, a strict six-hour eating window, and ...