There is some debate over whether having a warm bath before bed is actually beneficial in helping people fall asleep faster. Some people say that the body’s natural temperature drop after bathing or showering cues the body to sleep.
Others say that the activity releases serotonin, which can help regulate the body’s sleep-wake cycle. However, there is no definitive answer and more research is needed to determine whether bathing or showering before bed actually helps people fall asleep faster.