For millions of people, coffee is more than a drink—it’s a daily ritual that signals the start of the day and helps shift the mind into focus and activity.
Beyond habit, the experience itself plays a role. The smell, warmth, and routine create a psychological cue that supports alertness even before the first sip.
The main active compound in coffee, Caffeine, works by blocking adenosine, a brain chemical linked to tiredness. This reduces the feeling of fatigue and increases alertness.
However, caffeine doesn’t remove the need for sleep—it temporarily masks
