What if drinking coffee affects sleep?
Generally speaking, as long as the intake time and intake are well controlled, the impact on sleep can be minimized. Of course, caffeine tolerance is related to personal physique and varies from person to person.
1. First estimate the caffeine left in the body before going to bed.
The first thing to know is that you consume the most caffeine:
The caffeine content of a bag of coffee (10g powder) is about 80-100 mg;
The caffeine content of a bar of cold extracted coffee (33ml solution) is about100-150mng;
The caffeine content of a medium cup of American (350ml solution) is about150-200 mg;
The caffeine content of a cup of medium latte (350m solution) is about 75mg；;
The caffeine content of a bar of instant coffee (10-20g powder) is about 75- 100mg.
It is known that the half-life of caffeine is generally 3-6 hours. The 6-hour half-life means that if you drink a cup of coffee at 4 pm (the caffeine content is about 80- 100mg), by the afternoon 10 (6 hours later), the caffeine content in your body is 40-50mg.
How to judge whether the remaining caffeine in the afternoon 10 affects sleep?
2. Understand the minimum caffeine content in the body. This varies from person to person, and there is a simple way for you to test yourself:
If you are used to drinking cola and drinking a can of cola won't keep you awake, then basically it can be considered that 40-50mg of caffeine will not affect your sleep.
What should I do if I can't lift my spirits after drinking coffee?
Many students say that drinking coffee can't refresh themselves. Excluding individual differences (some people are naturally insensitive to caffeine), long-term drinking of coffee leads to the establishment of caffeine tolerance, which is probably the wrong way to drink coffee. Remind that for healthy adults, the safe warning line for caffeine intake is 400 mg/day. Even if you have a high tolerance for caffeine, don't drink too much.
1. Don't wait until you are sleepy.
As we have said before, when the glands in the body combine with gland receptors, they will send a signal of fatigue to the brain, thus causing drowsiness. Caffeine can refresh you because it replaces glands and binds to gland receptors. However, if you are tired and sleepy, adenosine and adenosine receptor have been combined, so there will be no loopholes for caffeine to drill, and it will not play a refreshing role.
On weekdays, you can pay attention to when you are most likely to get sleepy. It is better to drink coffee 20-30 minutes before you get sleepy.
Step 2 take a nap
I am the most sleepy after lunch, and then I feel groggy after a nap? You can finish a cup of coffee quickly (200-250mg caffeine is the best), then turn on the alarm clock for 20-30 minutes and start a nap. Even if you are not asleep, you can rest in a daze for 20 minutes.
In the process of sleep, we wait for adenosine receptor to separate from adenosine and combine with caffeine to reach a very high value in the body (about 29.8+-8. 1in after intake, and caffeine reaches its peak). When the alarm goes off, the effect is awesome!
How to drink coffee to stimulate the stomach?
Drinking coffee on an empty stomach may cause gastrointestinal discomfort, mainly to stimulate gastric acid secretion, so try not to drink coffee on an empty stomach. It is suggested to eat something to pad your stomach before drinking coffee, or try to drink coffee after meals.
Don't worry too much if your stomach is uncomfortable. Drink more water and eat some soda cookies to recover.
What should I do if my teeth turn yellow after drinking coffee
Because coffee contains tannic acid, tannic acid stays on the teeth for a long time, which will slowly penetrate into the teeth and cause tooth stains. But as long as you pay a little attention when drinking coffee, you can effectively avoid staining your teeth.
1. Drink coffee quickly. Try not to sip coffee for a long time. The longer coffee is in contact with teeth, the easier it is to dye.
Use straws. If the temperature permits, you can use a straw to reduce the contact between coffee and teeth.
3. Chewing gum can stimulate saliva secretion, thus neutralizing tannic acid in coffee.
4. Develop a good habit of gargling and brushing your teeth frequently. After drinking coffee, rinse your mouth as much as possible, and then brush your teeth (don't brush your teeth first, because the acidic substances in coffee are corrosive to your teeth, and brushing your teeth will easily cause tooth wear at this time).