Como o café à noite influencia o corpo e o descanso

How coffee at night affects the body and rest

How many times have we heard someone say they can drink coffee with dinner and still fall asleep easily? The reality is that the effect of caffeine goes far beyond the immediate feeling of alertness. Caffeine is a stimulant that blocks adenosine, the molecule responsible for signalling fatigue. When we drink coffee, the body feels more awake and active, and this effect can last for several hours, depending on individual sensitivity and the amount consumed. Some people metabolise caffeine more quickly and therefore seem less affected. But even if it's not noticed, deep sleep can be compromised.

Regular consumption of coffee at night can lead to accumulated sleep deficit, increased fatigue during the day, and mood swings. Deep sleep and REM sleep can be reduced, affecting memory and concentration.

For those who enjoy coffee at the end of the day, there are alternatives: opt for decaffeinated coffee or choose calming infusions. Investing in relaxing rituals, such as light reading or a warm bath, also helps prepare the body and mind for restorative rest.

See also

Explore: Sleep Hygiene Quiz

Back to blog