Caffeine in coffee is insoluble in cold water but soluble in hot water. Caffeine can stimulate cerebral cortex, eliminate drowsiness, increase feelings and thinking, and can be used as a cardiotonic to regulate heart function. It also has the functions of dilating renal blood vessels and diuresis. However, it is not only coffee that contains caffeine.
Usually a cup of coffee contains 60-65 milligrams of caffeine. However, if you consume too much caffeine, you are prone to tinnitus and myocardial hyperfunction (the heart beats faster and the pulse frequency increases). And the pulse is uneven, so be sure to drink coffee in moderation.
Pay attention to the consumption of coffee in subic;
Subic coffee is a certified product, pure natural without any chemical additives, and will not be dependent after taking it. If male friends use subic coffee, they can improve their physical function, enhance their immunity, help them erect, improve sperm quality, enhance their libido, eliminate fatigue and increase their pleasure. Therefore, if he is physically exhausted in the same room, or has difficulty in erection, he can use subic coffee to solve the problem.