If you're a CrossFit or Hyrox fan, the chances are you'll have come across the fabled L-sit. An advanced calisthenics move (that's a blend of bodyweight strength and gymnastics, for the unintiated: ...

This ridiculously hard L-sit exercise works your entire body without moving a muscle. These are the progressions you can use to get strong enough to do it. Everyone likes a good challenge. That’s why ...

We have all heard the core is essential for swimming. Some debate the amount of necessary core work for elite swimming performance. Others argue the lack of specificity of traditional core exercises ...

Core strength testing has come a long way from the straight-legged, twisting sit-ups used before World War II. We've moved on to bent-knee sit-ups, to crunches and now to the plank pose or hanging ...