Thanks to Chris Willoughby and Jonathon Lewis at Balance Performance Physiotherapy who supplied this post for us at LondonGym

Trunk and shoulder strength...stability, control, power and agility through a full range. Remember this is part of the mans daily conditioning session, its not a performance in itself. His intention is trunk/core/shoulder girdle strength and control.

For those who dont believe the pectorals and lats are involved in shoulder stability watch this a few times and observe closely.