1. Hygiene - First and foremost, a post workout shower is essential in terms of hygiene. The sweat that you produce whilst exercising might be a sign of a good session, but people would prefer to hear about it rather than smell it.
Showering is especially important if you play sports where you might have contact with another person. For swimmers, this is equally important as the chlorine in swimming pools will damage your hair and skin if you simply towel off after getting out.
