Earning money on the internet, although a good way to make money, in most cases entails, at a minimum, an irregular working day that can last not only during the day but also at night. And to keep themselves in good shape, many freelancers, traders, managers and others whose earnings are connected with the internet, and not only, drink invigorating beverages, one of which is coffee.

A wide variety of coffee beverages – espresso, americano, latte, cappuccino, flat white, etc., gives everyone the opportunity to choose a coffee beverage to their liking. And an irregular working day, stress and the desire to be alert force people to drink coffee by the cup and at any time of day.

However, as with everything, excessive consumption of coffee can negate its benefit and even harm health. After all, coffee even in small quantities is contraindicated for people with hypertension and an elevated heart rate. As complications it can cause a stroke and even a heart attack. In addition, in only 7 percent of people is caffeine eliminated from the body quickly. Usually the elimination of caffeine from the body occurs within 12 hours.

But despite this, coffee also has many beneficial properties: it tones, stimulates mental activity and gives energy. It is coffee that prevents liver diseases and constipation. Moreover, coffee not only invigorates, but also protects against depression, into which it is very easy to fall today – there are more than enough reasons nowadays.

So, how many cups of coffee can you drink a day? Geneticists say: one cup of coffee a day will be beneficial for everyone. But whether you can drink more depends on several factors, such as gender, hormonal background, pregnancy and taking medications. Also, the harmless amount of coffee depends on how quickly caffeine is eliminated from a person's body and whether dependence develops.

In addition, the amount and time of coffee consumption directly depend on the variety as well. Specialists advise drinking strong robusta in the morning. But arabica is also suitable for the evening, since it contains less caffeine. It should be consumed after eating. And for those for whom coffee is contraindicated, they suggest drinking decaffeinato – coffee without caffeine.