1. It is caused by caffeine in coffee exciting the cerebral cortex. This situation can be improved by listening to light music and drinking a cup of hot milk before going to bed.

2. You can also use hot water to soak your feet for conditioning. In severe cases, you can consider taking hypnotic drugs for treatment. At the same time, we must pay attention to not drinking coffee before going to bed, and the concentration of coffee should not be too strong.