I find this astonishing. I thought I used up my energy in the gym. Or when thinking and writing. Nope. About half of the body’s energy is used merely to pump sodium out of the cell and potassium into the cell. From: https://lpi.oregonstate.edu/mic/minerals/sodium “Maintenance of membrane potential Sodium and chloride are electrolytes that contribute to the maintenance … Continue reading 20-70% of the body’s energy is used by the Sodium Potassium Pump