In this exercise, you are going to walk your feet towards your hands until you are making a V at the hips. The pike push-up will mainly target your medial deltoid and is best used in the 6-12 rep range.
From a push-up position, you will shift all of your weight to one hand and lift the other hand to touch the opposite shoulder. This exercise will target your anterior and medial deltoid, and should be done for higher reps (10+).