Core-focused exercises for lower abs including crunches, planks, and twists.

The chair makes these core exercises more accessible to more people.

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Do you want a strong ...

All you need is a chair ...

Inside the Summer Abs Circuit with Ashley King Fitness Ashley King’s abs-focused workout emphasizes functional core strength, ...

Add Yahoo as a preferred source to see more of our stories on Google. "Where is my waist?" If you’ve asked yourself that question, you’re not alone — especially if you’re of a certain age. And while ...

Simple, equipment-free, and highly effective, the plank is widely considered one of the best exercises for building core ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." That's why it pays to dedicate focused training time on your core. You can start with these ab exercises ...

Lately, my core routine has felt staler than week-old sourdough bread. Sure, classic moves like crunches, Russian twists, and planks are great (and effective!), but in order to reap the gains of ...

Jennifer Lopez is known as much for her sculpted physique as she is for her music, movie roles and romantic partners. Her former trainer, Jay Cardiello, revealed to The Post how he helped J.Lo achieve ...

Your core includes muscles in your pelvis, hips, lower back and abdomen. Numerous products make it fun and easy to improve ...