For those experiencing trouble sleeping, it might not be just excess screen time or stress causing problems. Some things as simple as what one chooses to eat right before heading to bed may be affecting one’s circadian rhythm. There are several foods that are popular for providing comfort, but these very items may be preventing one from a restful sleep. Thus, here are some of the common foods to avoid before bedtime. Coffee The high percentage of caffeine in coffee makes it one of the worst foods one can have before bed. Caffeine is a well-known stimulating substance that excites the central nervous system, even several hours after consuming it. The effects can last from 8 to 14 hours, making one stay awake. So before drinking a cup of coffee, make sure to keep the bedtime in mind. The best time to have coffee or any caffeinated beverage is at least 8 hours before going to sleep. Potato chips Having a comfort snack such as potato chips right before going to bed may seem to make one feel relaxed. However, as much as this snack may produce some serotonin in the brain, it may end up disrupting sleep. This is because potato chips have a high amount of unhealthy fats and sodium.