Bodybuilding Bros on MSN

RKC plank: How to do it perfectly to build stronger arms and core

If you are looking for a real challenge, then try doing the RKC Plank. Invented by a former Soviet special forces trainer, ...
FITBOOK magazine on MSN

How to Keep Ab Workouts Exciting: 5 Plank Variations for Beginners and Pros

The plank is one of the most well-known exercises for the abdominal muscles. However, if done regularly, it can become boring and gradually disappear from the workout routine. That’s unfortunate ...