As part of the Women’s Health Flex Challenge, trainer Jenna de León takes you through this snappy circuit that includes four ...

This quick, four-move dumbbell workout targets your upper body and core. It's perfect for a mid-holiday energy boost.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." No offense to sit-ups, planks, and hollow holds, but basic core exercises can feel drab day after day.

Feeling inspired by Livvy Dune’s abs, but don’t quite have the same amount of hours to spend in the gym as her? We’ve good news: you actually don’t need *that* much time to make a difference when it ...

Better posture. Weak upper abs often result in poor posture and spinal misalignment, but by targeting these muscles, you can ...

Feeling inspired by Livvy Dune’s abs, but don’t quite have the same amount of hours to spend in the gym as her? We’ve good news: you actually don’t need *that* much time to make a difference when it ...

While crunches, sit-ups, planks, and other floor-bound movements are effective core-strengthening exercises, standing abdominal workouts offer unique benefits, especially for runners. If you’re ...

Time is a precious commodity, and sometimes, finding time to squeeze in physical activity, like a 30-minute HIIT workout, or a group fitness class can be challenging. However, coach Raneir Pollard has ...

Get more from less time after 45 with squats, reverse lunges, knee drives, overhead press, side lunges, and calf raises.

"Do 3 sets of 20reps each and you would have got your cardio n weight training for the day," she mentioned in the caption of ...