a 1-year print subscription, 450+ streaming workouts on the All/Out Studio app, and more. Why dedicate a week to ab workouts? “Having a strong core is important because you use it every single ...

If you have 10 minutes to spare and a couple of dumbbells to hand, then this quick core workout from fitness trainer Kat Boley is the perfect way to strengthen your core and energize your day.

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 ...

To ramp up the challenge, some of these moves incorporate a dumbbell, which not only increases difficulty but also helps ...