My PT (cryo&acupressure) compares it with that. I agree only is as much as the cold creeps on you slowly in both, so the shock is not as big as with cold showering. She also means: for non-fibromites. But it also creeps out of you very slowly after a long winter walk, I can remember, when I used to do that before fibro, of sometimes needing hours to feel OK again. (Now I don’t risk it too much, even tho my cold tolerance is better. I never go above 90mins., better 40-60’. And only 20-30’ if I’m not feeling too good.) After the cryo you feel warm pretty immediately. After a cold shower you do too, but I sometimes need a hot water bottle for me feet. Yesterday I cold showered at 12:20 and then did cryo at 1:10 - that was completely OK for my body, but my feet had to be packed in warmly after and remained slightly cold…