Kill two birds with one stone (dumbbell) in as little as 15 minutes using this trainer's abs and arms strength building workout.

Try five joint-friendly chair moves that engage your core and help flatten belly overhang after 50—no floor work required.

From Kim's subtle tweaks to Kylie's jaw-dropping confessions, we're breaking down every Kardashian sister's cosmetic journey.

Build muscle and improve posture with 4 standing moves that make your belly look tighter in 30 days—no surgery needed.