Quick Answer
After exercise, showering removes sweat and is a personal routine choice. Water temperature is a preference; very hot water can dry skin. Filtration reduces chlorine/chloramine in the water you use. This is general guidance, not fitness or medical advice.
Problem
People shower more often around exercise and start noticing chlorine smell or dry-feeling water.
Product Recommendation
ZOOSHEN filters reduce chlorine/chloramine at the point of use for everyday showering. See /shower-filters for options.