Caffeine. Sometimes, it’s a love-hate relationship. It keeps us awake when we need to (read: all-nighters), but it can also keep us more alert than we’re supposed to.
For something we consume regularly, caffeine tends to consume us back. We enjoy it so much to have one, two, three cups of our favorite caffeinated drink, only to realize the consequence when that 1 AM moment hits.
Caffeine can be a much-needed boost – that’s common knowledge – but we’ve never really paid much attention to how it works.
That’s what this article’s for. We’re going to dive deep into caffeine and how it affects sleep.
Some of our favorite athletes are just like us – they have their everyday caffeine regimenand love it.
But did you know that some athletes don’t just have it as part of their morning routine; they also use it to boost sports performance?
In fact, three-fourths of the world’s elite athletes take advantage of caffeine’s performance-enhancing properties.
But have athletes always been allowed to drink coffee and other products with caffeine in them, especially right before the sport?
If so, how much are they allowed to consume?
Feeling down? Going through mood swings? Having one of those days?
What if I told you that you can turn your day around as easy as getting a caffeine fix?
I'm not pulling this out of a hat. Science suggests that caffeine is not just a stimulant that keeps you alert, it can also improve your mood and help you become a walking ball of sunshine. This may seem like a tall order for caffeine but wait ‘til you order a tall cup of coffee and experience it yourself!
Based on a review conducted by A. Nehlig, having 75mg of caffeine (a cup of coffee) every 4 hours can lead to a “pattern of sustained improvement of mood over the day.” It can increase alertness and well-being, help concentration, improve mood and limit depression. 
Keep reading to find out more!
Caffeine has been known for its several benefits – from something so simple as helping you get over that afternoon slump, to lowered risk of Type 2 diabetes, Alzheimer’s and heart disease.
And for those wanting to lose weight, listen up!
Caffeine can also INCREASE METABOLISM.
Yes, you read that right. In fact, increased metabolism is observed for up to three hours after consuming 8 mg/kg of coffee (1).
So how exactly does the magic happen?
The effects of caffeine on one's mental state are an important area for scientists to explore because about 90 percent of the world's adults take the stimulating substance. Some prefer coffee, some tea, some soda pop and others take it in energy drinks. Caffeine is also in chocolate, some over-the-counter pain relievers and other products, including Viter Energy Mints.
As to depression and caffeine, some scientists say it helps alleviate symptoms, and some say it causes depression to worsen. Some claim caffeine's positive effects are so great that it can help prevent suicide.
It seems caffeine may enhance memory and learning, but not if it is taken before the lesson is to be learned. Research from a few years ago says caffeine should be taken after that important business meeting, crucial college lecture or other knowledge-imparting event you need to recall.
Some studies show a benefit from caffeine on memory, some show none. Same with alcohol. But it seems scientists find with few exceptions that good diets promote healthy minds and bodies.
Caffeine and fasting are controversial in some circles. Is it truly fasting if you have coffee or other liquids during your time of abstaining from eating? Some people say to be a pure fast, one must drink only water and eat nothing. Others maintain that having coffee and/or other liquids is healthier and ensures you don’t become dehydrated.
Did you know timing when you drink coffee intake may improve your life? In the morning when the alarm goes off, the first thing many people think of is getting a coffee fix. Coffee or tea doesn’t just taste good, the ritual is not just comforting, you actuallyneedthe caffeine to feel alert, normal and ready to face the day. And if you’ve developed a dependence on caffeine, you might even get a headache, be crabby and out of sorts or be too sleepy to perform well if you dont’t get it.
Caffeine isn’t addictive, but it sure is habit-forming. You don’t hear about jonesing coffee addicts robbing stores and hijacking motorists to get money for a fix. That’s because while caffeine does cause dependence, it isn’t in the same category as opiates or alcohol.
That’s a good thing that caffeine, unlike alcohol and drugs, does not cause disease, crime, financial ruin, automobile and other types of accidents and a breakdown in social interactions because in the United States 90 percent of people take it in one form or another.
Caffeine cycling for chronic users brings back that old black magic. If you’re a regular or chronic caffeine user, you may have noticed the stimulating effects of the substance aren’t as strong as when you first started to take caffeine. If you want to experience that near-bliss you used to get from that first cup of java, you can do caffeine cycling where you stop taking it for a while and then start again.
Researchers call the need people have for caffeine tolerance or dependence (both psychological and physical) rather than addiction. Some people who are dependent on caffeine suffer headaches, sleepiness and a bad mood if they don’t get their dose. But don’t confuse these symptoms with addictions to substances like alcohol and narcotics, where heavy users suffer intensely when they try to stop.
Another reason people get sleepy after caffeine is that people can build up a tolerance for caffeine, a stimulant and the most-consumed mood-altering substance in the world. It’s like alcohol. After months of years of heavy drinking, you need more to get the drug’s full effect.
Yet another reason people feel sleepy soon after taking caffeine is that it may wear off, and, as Men’s Health puts it, “The high comes with a crash.”