This ingredient delivers roughly 73 percent of nitrates to the body. Nitrates are necessary for several body functions, and there is increasing research that they play a strong and vital role in nitric oxide production. This supplementation with nitrates will be useful and necessary to boost nitric oxide levels for athletic performance. Nitrates are converted to nitrites in the body. Nitrites have been shown, among other things, to reduce the need for oxygen in muscles. This is very important from an athletic and endurance standpoint because of lack of oxygen during intense workouts is often what leads to muscle exhaustion, failure and soreness.