Caffeine is the most widely consumed psychoactive substance which stimulates the central nervous system to keep our body awake. It is present in coffee, tea, chocolate, cola and other carbonated beverages and cocoa. But have you ever thought why do you still sleepy after drinking coffee?
Caffeine is a mild diuretic which makes you pee and according to Mayo Clinic, it doesn’t increases the risk of dehydration. But if you are the type of person who doesn’t drink 8 glasses of water per day but a coffee lover then you are on the risk of being dehydrated. You lose water not only through urination but also through breathing, sweating and defecated. Along with water, small amounts of salts are also lost. Remember, sodium and water always come together. A good amount of sodium aids in the nervous system to function well by playing a role in action potentials. Moreover, when there is low level of water within the body, it causes your blood volume to decrease thus leads to thickening of the blood. Your body is using oxygen at slower rate and this makes your body sluggish. And when the time you think that coffee isn’t working anymore, we tend to add another coffee or you’ll start with high dose of caffeine. The more you drink, the more you pee and you are not hydrated well, you are increasing your risk to dehydration. Thus, makes you sleepy even though you already consumed coffee.
Keep your body hydrated
Our brain is composed of approximated 73% of water and its function depends on having abundant access to water. Water is needed for the production of hormones and neurotransmitters. So if you are well hydrated, you will be able to think faster and more focused. If you drink the recommended amount of water which is 8 glasses of water or 2L of water, it will replenish the loses in your system. Or just follow what your grandma says, drink plenty of water.
Wait for a few minutes
A new study from Barcelona University reveals that the effects of caffeine begin after as little as 10 minutes and 45 minutes is the time needed for maximum caffeine concentration to be reached in the blood. So wait for a few minutes and do not take another cup because it will be vicious cycle doomed to fail.
Remember: The recommended caffeine intake is 250 mg and more than that leads you to intoxication. This is characterized by restlessness, diuresis, gastrointestinal disturbance, muscle twitching, rambling flow of thought and speech, tachycardia, periods of inexhaustibility and psychomotor disorder.