I am interested to hear if anyone has pre- and post-cryotherapy biological measurement. For example, has anyone worn their Apple Watch or FitBit during the session?

What happens to heart rate? Blood pressure? Oxygen level in the blood?

Not that I’m looking for an answer in specifics, I just haven't seen any “measurement” data on the body with these cryotherapy sessions (other than temperature which I think we can all agree doesn't count…since they’re changing the temperature).