The big thing I notice taking on the heat or cold is about the same . Before I did cold when hot out my legs would hurt an be slow . They never bother me since . I heard eat or this . Non of that worked , What I think what's going on , people don't exposed there self to any temperature change and the immune system gets way of wack . It won't realize if there hot or cold . And the immune system is clue less too . What happens the immune system attacks the body. A lot of inflammation builds up just like fat builds up . Then pill after pill happens with not very good results . Take your socks off an walk in the snow show the immune system what's real . Don't get frost bit doing this . About all I'm saying put a little hardship in temperature change the results will go off the charts . If your hot or cold pay attention to your breathing . Ask yourself do I feel better when I inhale or exhale . Find this rhythm an learn to meditate . A one second mediation inhale hit the diaphragm an exhale . How did you feel ?