The world of supplements is full of amazing - and dubious - claims. It can all be pretty confusing. So in this first of our four-part series, Mac and Jinger discuss the proven science behind Nitrate and Sodium Bicarbonate. You’ll learn what they’re good for, how and why to use them, and who can expect the most benefit from them. Oh — and why you might not want to use mouthwash before drinking that beet juice.