A well-chiselled six-pack might not need you to slog at the gym for hours. There are some ab workouts that are both effective and efficient, as well as make the best use of your limited time. Here is ...
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 ...