Do our bodies “burn” or “use up” caffeine?

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If I were to drink an espresso at 5:30pm and then go for a 2h run, would the caffeine still affect my sleep at say 9:30pm? I understand that the half life of caffeine is around 4-6hours, so my question is, would this reduce after burning extra energy?

In: Biology

4 Answers

Anonymous 0 Comments

Your body produces “tiredness” molecules as the day goes on, and there are “sensors” in the body which measure these and trigger tiredness and sleepiness. Caffeine just sorta temporarily plugs these sensors and prevents them from measuring the tiredness, till your body clears it out from the system enough that the sensors start working again.

To answer your question, jogging will increase production of the “tiredness” molecules which will cause you to crash harder once your metabolism clears the caffeine.

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