This workout is short — just 10 minutes — and requires no equipment. But it packs in a lot of work. PS Fit instructor Natalie White designed it to target your abs, core, and thighs, and she'll have ...

This 10-Minute Ab Workout Carves Out Your Summer Six-Pack originally appeared on Men's Fitness. You don't have to live in the gym 24/7 to keep the lean physique you worked all spring to build. Many ...