Build full-body strength at any age with these seven expert-recommended bodyweight exercises. No equipment needed—just your own body.

Tighten your abdominal muscles and gently arch your lower back, pressing it into the floor. Hold for five seconds, then ...

The problem with classic ab exercises like sit-ups and crunches ... for the upper body to dissociate with rotation," Dulak says. SUPINE PELVIC ROCKING (Pam Owens) "Raising and lowering the pelvis ...