Why Caffeine Makes Me Tired?

Caffeine can block the effects of adenosine, which is what makes you feel alert after your morning cup of joe. However, once the caffeine wears off, your body may experience a buildup of adenosine that hits you all at once, which is why coffee can make you feel tired.

Can caffeine have the opposite effect?

Coffee, tea and other caffeinated beverages are known to boost energy levels. However, they can also have the opposite effect by leading to rebound fatigue after the caffeine leaves your system.

Why does caffeine make me sleepy ADHD?

Caffeine interacts with a molecule in the body called adenosine , which assists with communication between brain cells and acts as a nervous system depressant. Adenosine levels increase throughout the day and help promote feelings of drowsiness.