#COFFEE HELPS TO STAY AWAKE FULL#

Thus, specific recommendations for timing caffeine consumption to enhance day wakefulness without harming evening sleep quality require an individualized approach.' How does coffee affect body and brain?Ĭoffee has an impact on a compound known as adenosine that builds up in the body over the course of the day.

#COFFEE HELPS TO STAY AWAKE FULL#

The time for the full effects of caffeine to dissipate can be four to five half-lives. 'Remember that half-life means reflects the time for half of the stimulant effects to disappear. 'For example, smokers tend to process caffeine more quickly and pregnant women process caffeine more slowly,' Ludy said. The half-life varies from about two hours in fast metabolizers to 10 hours in slow metabolizers. The half-life of caffeine, or the amount of time that it takes for half of the stimulant effects to disappear, is about 5 hours on average, although this varies significantly between people.

When people consume coffee earlier in the day compared to in the evening, its effects on the brain have sufficient time to wear off before sleep. This could lead to potentially negative effects when it comes to sleep quality, experts told Newsweek. While most people would probably associate coffee drinking with the daytime hours, some individuals consume the caffeinated beverage at night. 'Since the caffeine in coffee works as a stimulant, this can put the brain on high alert and make it more challenging to fall asleep.' Its levels peak in the blood within about 30-60 minutes of consumption,' Mary-Jon Ludy, professor of Food and Nutrition in the College of Health and Human Services at Bowling Green State University, told Newsweek. 'People often describe caffeine as speeding up the brain. Caffeine is a compound found in coffee that stimulates the central nervous system. This could lead to potentially negative effects when it comes to sleep quality, experts said. How does coffee affect your brain and sleep if you consume it in the evening hours or shortly before going to bed?Ĭoffee is one of the most popular beverages in the country, with 7 in 10 Americans consuming the drink every week, according to the National Coffee Association.

Coffee helps to stay awake