Take on this intense ab challenge to strengthen and tone your core before the new year! Complete 200 mountain climbers, 100 sit-ups, 100 Russian twists, and 100 side-to-sides in this full-core workout ...

Plus, which move is more effective for strong abs.

Struggling to motivate for yet *another* at-home workout? This 28-day abs challenge is sure to keep you on track. All you have to do is press play. Start your week off with a full, 20-minute Pilates ...

Confession: Despite my lengthy career as a fitness journalist and being well-versed in the health benefits of a strong core, I have not been consistent with training my abs for a while. (Hi, holidays ...