Kelvin Gary is the founder and Owner of Body Space Fitness (NYC), which focuses on full-body, functional training using anything from kettlebells, TRXs, sleds, and battling ropes to full body Rubber Bands (technical term). We talk about sport specific individual training, the weak link in your posterior chain, moving through space faster and easier, how to sufficiently warmup to activate the areas and muscles you want to target, and why everybody keeps rupturing their achilles tendons.