While consuming 1 to 2 cups of coffee a day can be beneficial, avoid relying on coffee or energy drinks to keep your sleep duration short. Excessive consumption of these beverages can lead to restlessness and anxiety. Strive for adequate sleep (8 hours) and take breaks to refresh yourself while studying.
Consume coffee primarily in the morning hours. Drinking coffee after 5 PM can impact the quality of your sleep, even if you're not aware of it. Research indicates that it's better to consume coffee more during the daytime and avoid it before bedtime or in the evening hours.