The Risks of Cold Showers

"There's no way it doesn't cause some stress on your heart and then on your body," he says. "If you're already sick, you don't need adrenaline rush or whatever else you're going to get from a cold shower." The American Heart Association is concerned that there had been some studies on this, but very little of it had been done on people who actually had heart conditions. People with lung issues may vary face risks as well because cold showers can constrict the airways in the lung.