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What foods make you drowsy and what foods make you awake? I just had dinner and I can hardly stay awake even though I took a nap today. How can one eat to feel awake? Before going to sleep, what should one eat to become sleepy?

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closed as off-topic by Shog9 Nov 27 '13 at 20:41

  • This question does not appear to be about personal productivity within the scope defined in the help center.
If this question can be reworded to fit the rules in the help center, please edit the question.

How often do you exercise? – Gaʀʀʏ Nov 27 '13 at 16:20
This question appears to be off-topic because it is about food and health rather than a specific problem with personal productivity. – Shog9 Nov 27 '13 at 20:41
wth?! This is clearly about productivity. It's about eating, feeling drowsey, and that affecting productivity. – dwjohnston Nov 28 '13 at 2:41
I dont mean to be confrontational but doing xyz which then leads to abc, which then affects your ability to do something would basically make anything and everything on-topic. Maybe if you honed in on some specific aspect of this, then it may turn out to be an on-topic question. – AsheeshR Nov 29 '13 at 1:39

Foods that help you sleep

My go-to sleeping pill food has always been the banana: "an excellent source of magnesium and potassium, which help to relax overstressed muscles. They also contain tryptophan, which convert to serotonin and melatonin, the brain’s key calming hormones." (Source.)

You may have heard the myth that turkey can send you to sleep because of the tryptophan - you actually need carbs as well, as they "stimulate the release of insulin. Insulin, in turn, makes it easier [indirectly] for tryptophan to enter the brain." (Source.) So a banana's ideal for this, as it contains both tryptophan and carbs. This may also explain another answerer's suggestion that sugar sends him to sleep.

(Warm milk probably does nothing but act as a placebo, by the way.)

Other suggestions I've seen (that you may wish to take with a proverbial pinch of salt) of sleep-inducing foods include almonds, miso soup, cherries, and oatmeal.

How to feel less sleepy after eating

Three articles that might be useful on this front:

Those articles' most useful tips for staying alert include:

  • Eat more small meals, rather than fewer large meals, to get off the blood sugar roller coaster and stop too much of your energy being spent on digestion at one time.
  • Make sure you stay hydrated by drinking water with your meal.

The first two articles list a number of foodstuffs that they say contain certain nutrients that fight fatigue. I'm not convinced of the science behind them, but you may want to look for yourself and try things like dark chocolate, walnuts, whole grains (for both complex carbs and fibre), citrus fruits.

Personally, I think what's more important than looking to specific superfoods to wake you up, though, is eating light and nutritious lunch that's free of sodas, sugar and typical junk foods that will spike your insulin massively and send you into a food coma.

In general: why we get tired after eating

(Because a bit of background info might help you find your own tips!)

There are three main physiological reasons one can feel sleepy after eating (from the Wikipedia article for postprandial somnolence):

  1. Parasympathetic activation - put simply, the body moves from "fight or flight" mode to "feed and breed" mode when food arrives in the intestine.
  2. Insulin, large neutral amino acids, and tryptophan - increased insulin from eating indirectly causes uptake of tryptophan into the brain. This gets converted to serotonin, then melatonin - key chemicals for sleep.
  3. Insulin-induced hypokalemia - increased insulin from eating can cause low potassium in the blood (hypokalemia), which can cause sleepiness.
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For not feeling tired after eating, try eating smaller meals.

For example at work, try having two lunches, (or morning tea, lunch, afternoon tea), rather than one big lunch.

Avoid sugar during the day.

I find something with carbohydrates is quite helpful at work (eg. sandwiches), but you might want to try a low-carb diet.

For feeling sleepy at night, the opposite isn't going to work. Don't try eating a large meal to put yourself to sleep - you won't get a particularly restful sleep.

Do have dessert, I find the sugar helps put me to sleep.

Also, avoid coffee in the afternoon, and get plenty of exercise.

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