Coronavirus Covid-19 practice to build your immune system against Covid-19 and cancer. Walking barefoot in grass or sand is supposed to ground out your bodies negative energy field. Heard this from Tim Ferris writer of the Four Hour Work Week. Also that bacteria in the grass or sand helps build up your bodies immune system. Big Pharm doesn’t want you to know this because they can’t charge you for natural remedies. Tobacco and alcohol ruin your immune system and anything I need you do to remedy that is like a bandaid on a gaping hole.