From habits to genetics, several factors determine how caffeine affects you.
Caffeine, found in many products like coffee, energy drinks, soda, teas and chocolate, is the most commonly consumed stimulant worldwide. An85% of Americans drink at least one caffeinated beverage daily, with each person consuming an average of 165 mg of caffeine per day — equivalent to about one and a half cups of coffee.
For some, this amount is not enough to stay alert throughout the day, but could turn others into a jittering mess. So how does caffeine affect the body, and why might people react differently to its stimulatory effects?in reasonably large doses, caffeine is a drug — a substance that changes the body’s mental or physical state. And accomplished caffeine physiologist Astrid Nehlig, Ph.D.
“Caffeine’s first target in the body is the brain,” says Nehlig. “When an individual drinks caffeine in any form, it spreads rapidly throughout the body, with the first traces of caffeine reaching the brain within two to five minutes and levels peaking between 45 and 90 minutes after exposure.”the wakefulness and alertness many seek., which accumulates throughout the day as we expend energy.
“This translates into increased alertness, better concentration and higher working efficacy,” says Nehlig.adrenaline production, sending the body into a heightened “fight or flight” state. With this comes the exhilaration and energy rush one may feel after chugging a caffeinated beverage.
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