These 20 ab exercises and workouts will strengthen your core, whether your ultimate goal is building a six-pack or just ...

Start doing these moves regularly and start climbing faster. An added bonus? They also help prevent low back pain.

Build a stronger core after 45 with five smart bodyweight moves that outwork machines—no gym or equipment required.

Deadlifts hit a plateau? Shoulders hunching forward as you run? Or maybe you've just found yourself slumped over your desk ...