Some researchers believe that a person feels tired after eating because their body is producing more serotonin. An amino acid called tryptophan, which occurs in many protein-rich foods, helps the body produce serotonin.
Carbohydrates help the body absorb tryptophan. For these reasons, eating a meal rich in both protein and carbohydrates may make a person feel sleepy. People often eat a combination of protein and carbohydrates before bed, such as cereal with milk. People who eat larger lunches may experience more of an afternoon slump than those who eat less at midday.
Eating causes blood sugar to rise, and a dip in energy may follow. Feeling tired after a meal can be frustrating, especially after lunch, when a person may need to be alert.
A drop in energy during the day can be particularly dangerous for people who work in risky conditions, such as those who operate machinery or vehicles. A study of the effects of eating on the performance of night shift workers found that those who ate at night performed worse and were more sleepy at 4 a. If a person is continually tired after eating, and it is affecting their quality of life, they should speak to a doctor. Many people experience a dip in energy after eating.
Large meals and meals rich in protein and carbohydrates are most likely to make people feel sleepy. However, if this is getting in the way of daily activities, a person may benefit from changing the contents and timing of their meals. If these types of changes do not help, see a doctor. A study identifies complex distinctions in genomes that help map the migrations of the Arabic people. Two phenomena contribute to this. They include:. There is a dip in this pattern in the early afternoon.
This lull typically occurs seven to nine hours after waking up. When the alerting signal dips, the underlying sleepiness shows itself, and you feel sleepy. Interestingly, night owls who may naturally fall asleep and wake later often experience a delay in the timing of this afternoon lull as well. As a result, they may not feel sleepy until several hours later. If you experience sleep deprivation , this after-lunch sleepiness can be more pronounced.
In addition, sleep disorders such as obstructive sleep apnea may make this worse. Here are some things you can try to counteract the sleepiness that occurs in the early afternoon:.
Each of these can reduce the adenosine levels that contribute to sleepiness. Fortunately, if you tough it out, this period will pass. Then, as the circadian rhythm revs back up, you will find that you feel more alert again in a matter of hours. This natural pattern occurs typically, even without a cup of coffee or a nap.
Tossing and turning night over night can have a big impact on your quality of life. Our free guide can help you get the rest you need. Sign up for our newsletter and get it free. Assessment of the potential role of tryptophan as the precursor of serotonin and melatonin for the aged sleep-wake cycle and immune function: Streptopelia Risoria as a model.
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