Jack is far and away one of the best Strength and Conditioning coaches around. It’s not close. He’s the real deal. Most coaches now try to make money by coming up with some wonky focus or by being a social influencer. Jack separates himself by getting results, not some snake oil.
I came to Jack as an older recreational BJJ athlete, and he’s managed me through injury and busy schedules and I’ve gotten much better as an athlete as a result. Highly, highly recommend!