Yep, you read that correctly. The caffeine in coffee blocks certain receptors in your brain from receiving adenosine, a neurotransmitter that causes fatigue.
“Although caffeine prevents your brain from receiving adenosine, it doesn’t stop your body from producing it,”
said Niket Sonpal, an assistant professor at Touro College of Osteopathic Medicine in New York. So once the caffeine wears off, it’s the buildup of adenosine that causes you to crash (and, you know, reach for more caffeine), creating a vicious, energy-sapping cycle.
To get off the roller coaster, consider drinking lower doses of coffee and spreading them out so you’re not drinking them back to back (tapering things off by early afternoon at the latest to also improve the quality of your sleep, Sonpal said). This subtle change can help decrease your intake without feelings of deprivation while also cutting down on the crash factor. This will make your energy level feel more stable.
“Though reducing our reliance on caffeine sounds scary, it can help you feel more energized over the long term,” Sonpal said.
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