Caffeine (C8H10N4O2) is below left.
Caffeine is fat and water-soluble, being absorbed into blood flowing to the brain. Adenosine is a brain activity by-product, latching onto brain cell receptors, producing tiredness to make humans sleep, and regulates natural stimulants. Caffeine and adenosine are chemically similar: caffeine instead locks onto these receptors, blocking adenosine (Joseph Stromberg, 2013). Neurons are central nervous system nerve cells, essential for transmitting messages all over the body (Kendra Cherry, 2006). Neurons speed up instead of slow down, producing alertness (I. Yunusa, et al. 2011). Dopamine and adrenaline are produced more without regulation, increasing happiness and energy limitedly (Brain Marshall, et al. 2000). The brain builds caffeine tolerance, growing more adenosine receptors to balance both chemical effects: the same high takes more (Kevin Purdy, 2010). Caffeine decreases reaction time …show more content…
These vitamins contain no energy, but are helpers in hundreds of chemical reactions to change nutrients ingested into ATP, basic cell energy (Jill Corleone, 2015). Each B vitamin helps different reactions, like protein/carbohydrate digestion, etc. When the body reaches the maximum for each B vitamin type, excess is expelled in urine. Deficiency is unlikely if a moderately healthy diet is eaten (Monica Reinagel, 2011). The body can only absorb a maximum amount at one time, and replenishing from nutrition takes weeks. These are for marketing purposes: there are negligible energy boosts (Ali Eaves,