![]() ![]() 11 cups (2.7 liters) for the average adult female.15 cups (3.7 liters) for the average adult male.The Health and Medicine Division of the National Academies recommends being guided by your thirst, but does provide a total daily water intake to aim for: ![]() If you’re drinking a lot of coffee, you may not be drinking as much water as you should to rehydrate yourself. This could alter blood flow through different parts of the body. This means it causes certain blood vessels to narrow. It’s natural to reach for another cup of coffee to counteract this sluggishness, but this can start the cycle all over again.Ĭaffeine is also causes vasoconstriction. When this affects their normal function, it can also lead to feelings of sluggishness. When dehydrated, cells in the body lose fluid volume. This can lead to feelings of fatigue and sluggishness. Dehydration can lead to a rapid heart rate and low blood pressure. The water loss can reduce the fluid in your blood, which can affect how your cardiovascular system responds to maintain blood pressure and blood flow. If you do find that drinking coffee makes you urinate more frequently than normal, you may get stuck in a cycle of dehydration that makes you feel more tired.įirst of all, your body loses water when you go to the bathroom. This lends itself to the theory that drinking a lot of coffee increases your risk of dehydration.īut many scientists argue that caffeine-containing beverages don’t really impact urinary output in the long term any differently than other beverages. ![]() A diuretic is a substance that makes you pass urine more often. Caffeine has been considered a diuretic for years. ![]()
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