Build a strong core without lying on the floor using this trainer-approved three-move abs workout for beginners.

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 ...

They're the mantras of all fitness classes, "Tighten those abs!" "Engage your core!" but do you actually know what muscles you're engaging? While "abs" and "core" tend to be used synonymously, the ...

Personal trainers frequently get asked for the best exercises to flatten the stomach. While ab workouts can help with that, they also provide so much more than the aesthetic of a toned stomach area.

Are you up for a 31-day challenge? Join us on the START Today Facebook group for daily tips and motivation, to connect with others following the plan, and to get real-time advice from trainer ...