This is an essential exercise for beginners. Some people can´t do a single push up. It´s not a myth, I´ve trained some. This is an easy variation to gain strength and progress to the full Push Up if you add it to your routine.
On the floor on your knees supported by your hands in front of you.
Slowly bend your elbows to where your chest touches or barely touches, the ground.
Keeping the torso rigid and head aligned with your spine, inhale down, exhale up!