What can make you sleepy?

- Circadian rhythm: The body's natural sleep-wake cycle is regulated by the circadian rhythm, or body clock. When it is time to sleep, the brain produces melatonin, a hormone that makes you feel drowsy.

- Sleep debt: When you don't get enough sleep, you build up a "sleep debt" that makes you feel tired and sleepy during the day.

- Exercise: Exercise can help you fall asleep more easily and improve the quality of your sleep. However, exercising too close to bedtime can sometimes have the opposite effect and make you feel more awake.

- Caffeine: Caffeine is a stimulant that can keep you awake and alert. However, consuming caffeine in the hours leading up to bedtime can make it difficult to fall asleep.

- Alcohol: Alcohol can help you fall asleep, but it can also disrupt the quality of your sleep and lead to insomnia.

- Medications: Some medications, such as antidepressants and antihistamines, can cause drowsiness as a side effect.

- Medical conditions: Certain medical conditions, such as sleep apnea, thyroid problems, and diabetes, can cause excessive daytime sleepiness.

- Stress: Stress can make it difficult to fall asleep and stay asleep.

If you are experiencing persistent sleepiness, it is important to talk to your doctor to rule out any underlying medical conditions that may be causing the problem.