So crawling is a really popular thing in the fitness world. Reasons I have heard range from looking stupid to reseting posture via neurodevelopmental patterns.
I am content to let people believe whatever they wish, but what I know to be true is that each oblique (side ab muscle) forms a sling between the shouldr and the opposite hip. Every time we take a step, this muscle has to contract in order to assist in propelling us forward.
Putting the hands on the ground via crawling is like adding resistance to this effect and sliders on the feet do this double time!
This makes the reverse slider bear crawl my absolute go to for waxing my floors as well as murdering the obliques and improving posture. I included an easy level and a hard level and it is a great exercise to do as either a stand alone core exercise or during a warm up.
Perform 2-3 sets of 8-10 steps on each side and feel free to send requests for future circuits via email!