According to research, coffee is more likely to make people insomnia than milk tea. This is because coffee contains caffeine, and caffeine is a stimulating substance, which can stimulate the central nervous system, improve people's alertness and attention, and thus affect sleep. However, the contents of tea polyphenols and caffeine in milk tea are relatively low, which will not have a significant impact on sleep like coffee.

Of course, individuals have different reactions to coffee and milk tea. Some people may be very sensitive to coffee and milk tea, and even a small intake will affect their sleep. Therefore, we must drink coffee and milk tea in moderation, and adjust the amount and time of drinking according to personal circumstances, so as not to affect the quality of sleep.

Generally speaking, although milk tea also contains caffeine, milk tea is more suitable for drinking at night than coffee, and attention should be paid to the control of time and quantity when drinking coffee.