Built by mlb Coaches for Coaches. When you understand that gravity and your feet are the only things connecting you to the ground it makes you think how important developing your lower half is for all sports. rapid__sports is HERE! an objective measurable tool that coaches and players should be using. THE BEST SWINGS ARE BUILT FROM THE GROUND UP #hittingdrills #hittingcoach #mlb #redsox #hhgflorida #ground #feet #gravity #stride #kineticenergy #force #sway #pressure #mapping #ai #tempo #rhythm hhg_florida