As the heart pumps with more pressure to supply the muscles with blood, the lining in your arteries.

It's also said to speed growth and recovery time as well as increase blood flow, thus delivering more nutrients to muscles, helping them grow. Citrulline utilizes the arginine-nitric oxide pathway to increase NO and with beet juice you will be using nitrate-nitrite-nitric oxide pathway So yeah both would work well in terms of performance benefits. I would say that the studies linked concluded that arginine itself had little to no effect on NO production but citrulline definitely does increase plasma arginine levels which we know increases NO in blood.

There's also evidence that they can improve exercise performance, which can translate into greater strength and muscle gains over time (if you actually use them to push yourself harder in your workouts). Keeping in mind that they include all the best ingredients a nitric oxide booster should contain, it is definitely the #2 product on the market right now for increasing blood flow and enhancing lean muscle mass. The company has focused all its energy on just one product giving them time to do more research and as a bonus they've included our favorite strength boosting ingredients: Eurycoma Longfolia, Fenugreek and Tribulus Terrestris as well.

With improved Nitric oxide levels in the body more oxygen and blood will get pumped around the body. Exercise not only gives your heart a workout and burns off yesterday's pasta; it also pumps your nitric oxide and reduces inflammation. Since endurance performance also heavily depends on the amount of oxygen getting to the muscle tissues, blood flow delivering oxygen will help you work longer without tiring out.

Since one of the primary factors in a speedy recovery is being sure that plenty of nutrients get to the muscle tissues after a hard workout, blood flow is really going to make a difference. reviewed the clinical studies of supplements used to increase nitric oxide in the body. White Plains, New York — November 14, 2011 — Nitric oxide supplements are widely used for bodybuilding and athletic performance, but do they really work?

Examines Whether Nitric Oxide Supplements Make Muscles Bigger and Increase Endurance. A more realistic view is if a nitric oxide supplement can help you train harder over many workouts, and if you actually take advantage of this by pushing yourself in your training, you can make more progress than if you hadn't taken it.