I have a bath every night, no matter the weather. 30 mins reading my current book before washing and shaving. I have a bath thermometer and keep the temperature at 43.5 degrees c. Usually some muscle relaxing herbal bath salts. It’s the best part of the day. Pure bliss.
And hopefully afterwards you learnt that you keep producing sperm, right? So even if you had a bath that was hot enough to kill off your current batch, you’d have them replenished shortly after.