This is sweat.

 

Sweat: The Best Way to Rid Yourself of Heavy Metal

Okay, not that kind of heavy metal. A good sweat, however, will purge toxins like arsenic, lead, mercury, and cadmium from your system. Getting rid of other noxious substances like hair metal, leopard-print spandex, or Meatloaf's Bat Out of Hell album...well, that should be no sweat.