Increased Body Temperature
There are a few different mechanisms by which caffeine causes an increase in body temperature. First, caffeine stimulates the release of catecholamines, the hormones that regulate metabolism. An increase in catecholamine levels leads to an increase in metabolic rate, causing the body to produce more heat.
In addition, caffeine prevents the body from releasing adenosine, which regulates body temperature by causing vasodilation. Vasodilation causes the blood vessels to widen, which, in turn, allows heat to be released from the body. By preventing adenosine from performing its role, caffeine causes the body to retain heat rather than release it.
Finally, the increase in body temperature triggers the release of adrenaline, which raises an individual’s heart rate and constricts blood vessels. This can lead to feelings of overheating, as well as dehydration, if one is not careful to drink enough water. Individuals who find themselves feeling uncomfortably warm after consuming caffeine must take a break and allow the body to cool down before having any more.
