This works by placing any part of your body with direct skin contact to the earth's surface .... submerge yourself in water 

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Google Ai: 

• Walk barefoot on grass, sand, or dirt.
• Sit or lie down directly on the ground.
• Touch the earth with your hands, such as while gardening or sitting with your hands on the ground.
• Submerge yourself in a natural body of water, like a lake, river, or ocean.