If you’re looking for a quick core workout to get your abs popping this Monday morning, I’ve found it — my favorite Pilates instructor, Lilly Sabri, just shared this five-minute weighted core workout.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Olivia "Livvy" Dunne is entering a new chapter of her life—one that has her feeling stronger and more ...

A strong core helps with posture, balance and stability, and can prevent and reduce back pain. To effectively strengthen your core you need to work the low back, glutes, pelvic floor and the ...