SSC MTS EXAM

Detailed explanation-1: -Once consumed, caffeine is very quickly absorbed and distributed throughout your body, including to your brain. It’s here that caffeine elicits its most classic effect-helping keep you alert and awake. Caffeine accomplishes this by blocking sleep-promoting receptors in your brain called adenosine receptors.

Detailed explanation-2: -It binds to the adenosine receptors in your brain, meaning caffeine blocks adenosine from doing its job, so you won’t feel the drowsiness effects of the chemical in your system. But the buildup of adenosine continues all the time you’re awake.