Mobility Fundamentals: Grapplers Guide To Warm Up & Cool Down by Michael Sergi

Great instructional

This is a must for before and after training. Helps with shoulder tension and just generally not waking up the next day and feeling like a board.

Good Stuff!

If you do not already have a well-thought out warm up routine, this is a good one to have, and it's offered at a fair price.

Great explanation great way to start and end warmups before class and after.