I do lukewarm showers, too. Anything that raises my body temp is not good.
It's hard to
not do the things you used to enjoy and just be a spectator when you're used to participating. It's something we've all had to come to terms with and adjust to the best we can.
Some of us (me included) still attempt to do some things we know will induce symptoms. Sometimes I think we convince ourselves that at some point we'll be able to do these things again.

Wishful thinking!