Bare feet, skin to skin contact with Mama Earth. This is a practice that I take very seriously and any time the weather allows I kick off my shoes and get my bare feet on the earth. This has a strong anti-inflammatory effect, allows a massive inflow of negative ions, and calms the nervous system, to name just a few benefits.
And beyond this, grounding, or earthing as it is called, strengthens our ecological consciousness--the awareness of our deep interconnectedness with the Earth and all of Nature. For me, the practice of grounding has thus become a form of prayer and honoring of the Earth.
If you can't take off your shoes, you can put your hands on a tree for the same effect. Your body, mind, and spirit will thank you.