Long-term and large-scale use will lead to osteoporosis in the elderly, but everything has two sides. Relatively old age may be good for the heart.
Personally, if you drink too much coffee, you won't feel anything. At first, you may feel refreshed for a long time, but it's useless. In the final analysis, refreshing depends on your own persistence. You have the idea that you can't sleep and do your homework, and you can stick to it without coffee. You just want to cope with your homework. Without this idea, it's no use drinking too much.
Coffee and cola both contain caffeine. For most people, caffeine will not affect people's attention and intelligence, so caffeinated drinks are very suitable for drinking in the workplace. But anything that goes too far will lose its original effect. So I think it's best to decide whether to drink more or less according to the influence of caffeine on your sleep, blood pressure and digestive system.
When people are depressed or stressed at work, they all like to drink a cup of iced coke or hot coffee with a small amount of caffeine, because caffeine can help people reduce fatigue caused by body energy consumption. As long as you ensure that you drink these drinks regularly in a safe amount, it will not harm your health. Generally speaking, the safe daily intake of caffeine for adults is 300 mg, the amount of caffeine in each cup of coffee is 65- 120 mg, and the amount of caffeine in each cup of cola is 23-3 1 mg. That is to say, for healthy ordinary people, drinking 2-3 cups of coffee or 5-8 cans of coke every day will not cause health problems caused by coffee.
I hope it helps you.