The plank to push up combines two of the most effective bodyweight exercises. The plank element helps to tighten your abs while the push up element develops your upper body strength at the same time.
The cross body mountain climber is similar to the regular mountain climber except your opposite elbows and knees together during the movement. It brings all your main core muscles into play and is great for developing strength and tone in your abs.
The body saw is a powerful core movement that’s very similar to the plank. The added motion makes it perfect for targeting and sculpting all your ab muscles.