We all know the plank is one the best exercises we can do for our core. Today, on XHIT, fitness trainer Rebecca-Louise shows you different ways to spice up your plank routine while increasing the intensity of your workout. Think you can keep up for the whole workout? Leave us a comment and let us know how it went! Sign up for our newsletter: Stay tuned to our channel for more episodes: Check out our other fun workouts: 1. Intense…