Khaberni - Drinking coffee gives a feeling of more alertness and activity, and it can also speed up bowel movements, but drinking it late may hinder nighttime sleep, and excessive drinking may cause tension and anxiety.
According to Samantha Deras, a nutritionist at Mount Sinai Hospital, "Excess caffeine can increase heart rate, overstimulate the central nervous system, cause muscle tremors, and increase stomach acid production."
2:00 PM
Stephanie Johnson, a nutritionist at Rutgers University, explains that a good general rule is to avoid caffeine after 2:00 PM.
Consuming caffeine late in the day can lead to changes in sleep architecture, reducing refreshing deep sleep, while promoting lighter, less refreshing sleep.
Why do some people feel sleepy after coffee?
Johnson explains, "Caffeine boosts energy by preventing a neurotransmitter called adenosine from binding to receptors in the brain."
Once the effect of caffeine begins to wear off, the accumulated free adenosine is finally able to bind to its receptors, which sometimes leads to a sudden onset of fatigue, as Stephanie Johnson says.
According to "Free Will Health," the feeling of sleepiness from your morning coffee is likely to fade as lunchtime approaches.
At this time, you may also notice headaches as one of the side effects of caffeine withdrawal, and you may also suffer from decreased mood, difficulty concentrating, quick irritation, and an inability to think clearly.
Coffee timing and sleep
On the other hand, caffeine can stay in your body for 10 to 12 hours. So if you drink coffee very late in the day, it may disrupt your sleep.
Not all types of coffee are the same
Not all types of coffee affect the body in the same way.
"Different types of coffee vary greatly, and anyone who drinks coffee should know the caffeine content," Deras pointed out.
She added, "For example, Starbucks decaffeinated coffee contains more caffeine than usual for this type, and similarly, their regular coffee contains more caffeine than some energy drinks."
Therefore, it is advisable to know the caffeine content in each type of coffee, depending on the type of coffee beans used in its preparation.
