One of the most common questions that people ask is, “Why does coffee make me sleepy?” In most cases, it is not because of the caffeine itself, which is the culprit. Instead, it’s the process in which the caffeine breaks down adenosine, a neurotransmitter in the central nervous system that regulates sleep cycles. Caffeine is a powerful stimulant and blocks the brain from picking up the sleep-promoting substance. The adenosine then builds up until it’s no longer needed. The caffeine then falls off, and you’re in bed!
The caffeine content in coffee has a positive effect on your alertness, but it can also make you sleepy. Caffeine increases cortisol levels, the body’s stress hormone. This drowsiness can affect your overall health, and avoiding coffee can help you get more sleep. Instead of drinking coffee to boost your energy levels, consider switching to plant-based alternatives. Caffeine helps the body eliminate excess water and salt, so it can make you sleepy.
Drinking coffee can also cause dehydration, which will result in heightened fatigue. Additionally, caffeine causes cells to lose fluid, which can inhibit cell function, leading to lethargy. Caffeine also affects your digestive system, so cutting down on coffee can help you sleep better at night. You don’t need to give up coffee altogether, though. There are some easy ways to reduce your caffeine intake and maximize its effects.