Finish the Women's Health+ Ultimate HIIT Challenge strong with this 20-minute upper body bodyweight workout. Today's program uses fast-paced lateral exercises to strengthen and your arms ...

HIIT WORKOUTS DEMAND that you give your all. You might find that you have a hard time pushing to your limits on your own—so you'll get closer to achieving your goals when you have a world class ...

As a fitness editor, I’m no stranger to an ab challenge, but this seven-minute workout really challenged my midsection. I felt my deep abdominal muscles (the transverse abdominis) switch on almost ...

HIIT WORKOUTS DEMAND that you give your all. You might find that you have a hard time pushing to your limits on your own—so you'll get closer to achieving your goals when you have a world class ...

A good rule of thumb: you should not be able to talk and work out simultaneously during a well-programmed HIIT workout. Here's an example of a basic HIIT rowing workout. Total time: 12 min.

This scorcer recreates a signature Barry's workout at-home ... Bring both legs and arms together, squeezing abs as you connect hands to feet. Release and extend to start position.