Gain true strength by getting mobile. Physical therapists the world over prescribe ACTIVATION exercises in conjunction with MOBILITY exercises. The best athletes around the globe train their core, stretch and develop their fine motor skills - a lot. Why shouldn't you? In STIM class you'll build progressive strength, speed and agility by learning better motor control, body mechanics and releasing bound-up tissue so that you can pull, bound, jump, push, run and cut safely, better and without pain.