You Put The Shower On The Hot Setting
You may think that stepping into a piping hot shower is going to be helpful to you when you have sore muscles. And even though it is true that heat does help loosen up stiff muscles, if you are showering with water that is too hot, then that can hurt you. Hot water can remove the natural oils from the skin which will dry it out. Secondly, excessive heat will bring circulation to your skin which is why you turn red after a hot shower. That can cause inflammation. Use lukewarm water instead.