Nitric oxide is so important to getting stiff as it increases blood flow throughout your body (especially the 'D') When you're young and your body has the ability to make a ton of nitric oxide, you don't have to think about what you're fueling your body with as much. However, as you start to age, your body begins to produce less and less nitric oxide than it did the decade prior. This is why as you age, you really want to consider the dietary nitrates you are consuming as they become so importan