In this cabinet are saliva tests that can test your level of nitric oxide, they are called HumanN. They claim to use Super Beets to raise the level within 30 minutes. When you visit you can test yourself. The company HumanN says their tablets called Neo40 or powdered beets can do this. Nitric oxide plays an important role in many functions in the body regulating vasodilatation, blood flow, mitochondrial respiration and platelet function, promoting heart health. Nitric oxide enhances oxygen and nutrient delivery to active muscles, thus improving tolerance to physical exercise and recovery mechanisms. The test strips are about $14.00 on amazon. I recommend you test yourself like You can see in my test I did.
On the far left was after I woke up and the light pink shows I am low in NO, but I have seen people with zero meaning the color stays white. A few minutes later I put a teaspoon of Super Beets in 6oz glass of water and drank within 15 minutes. After a half hour I tested again and the one in the middle, the darkest pink shows a great increase to the highest level. An hour later I retook the test, and it has slightly lessened but still in the highest level. Do some research on which foods increase the NO level. It is Important in older people to test.