It’s time for the third and final part of ‘The Gym Wars’ series, unearthing a final, fascinating selection of behind-the-scenes videos that shed light on what really goes on in the training room as tempers flare, kicks and punches land too hard and bodies start to hit the floor.

Be sure to check out the first and second parts of the series if you haven’t already, and without any further ado, let’s begin.