Exercising while cold capping

I went through chemo in the summer, and when I rode or worked with my horse, I wore a helmet, always. Helmet plus summer heat = major sweat. Probably that was not good for my hair follicles, and probably I lost a little more hair because of it. But for me, the benefit of being outdoors, doing something I love, and taking my mind off of cancer for a while hugely outweighed the risk that I might lose a little more hair. And in the end, I did keep most of my hair, despite the helmet. If you want to avoid further harm to your fragile hair follicles at all costs, I think you will have to wait until they have fully recovered from the trauma of chemotherapy. Watch for shedding to end, and normal hair growth to re-establish itself. But if you are willing to accept the risk that exercising to the point of being drenched in sweat might lead to a little more hair loss than you would otherwise experience, then I agree with OnTarget: go for it. You can be extra nice to your hair follicles the rest of the time.