"Hi, I'm Brit Hertz! Follow along as I take on fun gymnastics-based challenges, pull pranks on my boyfriend, and have an overall blast with my friends." ...

In less than 20 minutes, you can sculpt your arms and abs with this upper body dumbbell workout, all while getting your heart ...

I recently discovered a three-move core-building workout from one of my favorite online fitness trainers and decided I'd use ...