According to scientists, our body contains “caffeine gene” in which regulate our body’s response to caffeine.
Reasons why caffeine may be ineffectively in keeping us awake.Beside adenosine which our body produces to make us tired.Your body’ adenosine is potent enough to prevent caffeine from overshadowing it
Your body’ adenosine is potent enough to prevent caffeine from overshadowing it. As a result, your body is excreting it even before it starts to take action. This is caused by your body processing the caffeine too rapidly by your body
So regrettably, not everybody is blessed enough to go thru the phenomena of caffeine.