Kicking off your shoes and sinking our toes into fresh spring grass is more than just a mood lifter. When we touch the earth with our skin, we absorb “free electrons,” which neutralize harmful free radicals in the body. Free radicals that go unchecked trigger body-wide inflammation and pain. But in one study, being in contact with the earth for 30 minutes a day reduced pain by 50% in six days. Still too cold to go barefoot? Just wear leather-soled shoes, which conduct free electrons nearly as well as skin.