system
Given the following post, respond as if you're commenting on Reddit:
human
What does a hot shower do for your health?
gpt
It really depends what you're taking the hot shower for. Let me address your concerns first. Hot showers will not give you wrinkles. Wrinkles are a result of aging, and have more to do with hydration levels and collagen breakdown. 

Hot showers also won't kill more bacteria. If the water is hot enough to kill more bacteria, it's hot enough to burn you pretty badly. That's why we have to boil water to kill bacteria. In fact, the way bacteria gets off your skin is from the "bubbly" action of soap that lifts the bacteria off our skin, and the water flushes it away. *ASIDE* this is why antibacterial soap is not doing anything but creating superbugs. The antibacterial soaps would have to be left on your skin for so long to kill bacteria that it wouldn't be reasonable to use. 

Hot showers are great for relaxing muscles that are chronically tight. Don't use heat on acute injuries, it will only increase the inflammatory response. Using heat on chronic muscle stiffness or soreness will be effective though. 

As far as what it does for your skin, not a whole lot. Hope this helps.