Tired and Sleepy in the Afternoon

If you find yourself feeling sleepy in the afternoon, that's pretty normal. That energy dip in the middle of the day is a normal part of the wake/sleep cycle that's regulated by our circadian rhythm. However, it can also be caused by what you eat -- too many carbs can cause an insulin spike that leaves you feeling sleepy. Or, it could be the side effect of medication or a medical or psychiatric illness.

Tiredness or fatigue, on the other hand, is a sensation that's accompanied by a feeling of being physically or cognitively tapped out. A long workout or a full workday are both likely to make you feel tired, as can an illness or a period of heavy concentration, such as studying for a test.

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Excessive sleepiness can have a number of causes, including insufficient or inadequate sleep, medications, shiftwork, certain psychiatric illnesses and physical conditions like snoring or insomnia. If you're experiencing this, it's important to visit a doctor or sleep disorders clinic to diagnose the cause of your symptoms. In some cases, the problem can be fixed with lifestyle changes. Avoiding caffeine and eating a healthy, balanced diet, for example, can help prevent excessive sleepiness. It's also a good idea to stick with a regular sleep routine.