Surgeon Hook named four main components necessary for the healthy functioning of the body. 
the main components that a person needs for the healthy functioning of the body. According to him, they are vitamins D3, K2, calcium and the combination of amino acids L-arginine + L-citrulline.
The medic compared them to four wheels in a high-performance car, each of which must work in concert with the other three to take care of the engine, which is played by nitric oxide.
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“Imagine that our body is Tesla, and the engine is nitric oxide. We take nitric oxide for granted as it is our body, but we need to recharge, replenish and take care of it. We cannot take nitric oxide as a standalone supplement because it is a gas, but we can tune the four wheels to take care of the engine, ”the doctor explained.
He stressed that it is very important to maintain the required level of nitric oxide, since it is without this element, and not without oxygen (as previously thought), that the heart muscle instantly stops pumping blood. At the same time, the level of nitric oxide decreases as a result of physical as well as mental activity, which today has become much more due to the development of digital technologies, the scientist said.
The specialist added that the use of supplements containing the four named components , helps to improve health, but at the same time, for this you need to try to avoid stress, reduce alcohol consumption, eat well and exercise regularly.
Previously, nutritionists from the United States talked about what drinks should be drunk so that less often get sick and strengthen the immune system. Among the healthy drinks, experts named pure water, kefir and yoghurts, herbal and green tea. They recommended adding lemon and ginger to regular tea, as well as looking at apple cider and berry smoothies.