but then you get this secondary injury cascade. cold therapy or ccyro therapy can blunt the injury. back strain. so the back muscles actually what they can do is go into spasm to protect themselves. and it s been shown that heat is actually better than cold initially after a back injury. ainsley: interesting. on the back use the heat, anywhere else use cold. correct. ainsley: this one is shocking. if your kids like to swim, listen to this mom and dad. drowning can happen hours after your child has left the pool. that s fact or fiction? this is actually true. ainsley: i can t believe that how in the world can your child drown after they leave the pool. the good news this is very rare. after you take water in your lungs, your larynx or voice box goes into la ringo to shut off. the kid can leave the pool and still be in spasm unable to get air into their lungs.