Begin with three sets of each exercise. To build strength, Mr. Salvador recommended four to eight repetitions per set. As you become more comfortable, you can increase to four sets. Take between 90 ...

It's well established that a strong core can help with posture and back issues, and properly executed sit ups can contribute to a stronger, more stable core. "Regularly doing sit-ups or crunches can ...

You want your butt where it belongs — in your underwear! After last week’s column, I expected this question. Especially since big butts is an “in” thing. However, in my opinion, it has gone way beyond ...

Corenswet's physical trainer breaks down the routine that helped the formerly svelte actor put on 40 pounds of muscle—and how ...