Alison Brie and Jessica Biel are showing off the L-sit chin-up. Here's how to do one with good form, and how much strength it requires. When Bruno first shared a video of Timberlake knocking out 10 ...

The gold standard bodyweight exercise is notoriously tough. Here's what you need to know about nailing solid reps.

Courteney Cox's trainer just shared a video of her crushing some unassisted chin-ups. The 60-year-old is a "savage in the gym," he says. Courteney's workout routine involves cardio, strength training, ...