I\’m surprised with this reason 

A warm evening shower can help you fall asleep faster by lowering your core body temperature and signaling your body to rest. It also relaxes sore muscles and prevents leg cramps after a long day.

Showering at night is great for skin and hair—giving your hair time to air dry naturally, making it shinier, and clearing skin of daily dirt and allergens. Clean skin before bed supports healthier cell renewal overnight.

Even a cool shower can reduce body odor and night sweats, improving how you feel in the morning.

So, night showers might just be the upgrade your routine needs.