"Caffeine" is a natural substance that can cause excitement. It blocks the secretion of "adenosine" that promotes sleep, and also makes the human central nervous system excited. It is a good choice for refreshing the mind. Sometimes you can't sleep well and you are busy with work, so you have to take some caffeine to refresh yourself. However, consuming food or drinks containing caffeine after the evening will make the feeling of excitement continue, thereby interfering with nighttime sleep; at the same time, caffeine also has a diuretic effect. If you take it before going to bed, it will increase the number of times you go to the bathroom in the middle of the night, causing a decrease in sleep quality.
If you want to consume caffeine without affecting your sleep, you need to have a more scientific understanding of caffeine: Generally speaking, the half-life of caffeine is 3-6 hours, and it will stay in the body for 6-14 hours. Therefore, in clinical practice, we recommend that insomnia patients who are more sensitive and easily affected by caffeine should avoid using substances containing caffeine after the afternoon or at least 3-6 hours before going to bed.
Although drinking coffee can help you stay awake, we still recommend that insomniacs prioritize solving their sleep problems! Once your sleep quality improves, you may no longer need to rely on caffeine to stay awake.