Question:
What are the heterim for showering during the nine days for people who sweat a lot like me?
Answer:
If you are uncomfortable to the degree that you feel you need the shower, then it would be permitted to take a cold shower. You may add a little hot water if it is too cold for you.
Sources:
Kovetz Halachos ( R’ S. Kaminetzsky shlit”a) Bein Hamitzarim 14-4.
