At 55, Jennifer Lopez isn’t just defying age — she’s redefining it. Her former trainer Jay Cardiello revealed to The Post how he helped J.Lo achieve those famous sculpted abs — and shared some tips on ...

Denise Austin shared a quick exercise that strengthens the abs. The 68-year-old fitness pro said it’s a great way to squeeze in a workout during the busy holiday season. “Little movements like this ...

You’ve probably heard of high intensity interval training (a.k.a. HIIT), but have you heard of high impact training? Though they sound similar, these two types of exercise are a little different. Like ...