Doing the plank is hard enough as an exercise when it's done statically. When you also add a dynamic component to it you begin to bring more muscle groups and fitness elements into play (like a cardiovascular workout, dynamic muscle strength and even aerobic capacity). The Plank into Lunge combines two popular exercise routines to deliver a powerful combination that saves you time by exercising quite a few muscle groups at once. 

What's involved: Shoulders, triceps, lower abs, front hips, quads, calves, lower back, glutes. 

Powered by: Shoulders, triceps, quads and lower abs.

Tip: This has to be performed as a precision exercise. Take note of where your body lands and how it stands. This is all about muscle control.