If you like go for sports and some experiments in this area; your muscles surely ache sometimes.
This foam bath is really good treatment for you.

Ingridients:
8 mint teabags
1 cup of sea salt

Water should be quiet hot about 105F (40C) dissolve the sea salt in water and add mint teabags.
Just in 2-3 minutes you would feel much better. Make a massage using a brush.