Every family knows the scene. Thanksgiving dinner is over by three, and by four half the family is asleep in the living room with the game still on.
That heavy, foggy feeling after a big meal is common enough that people treat it as part of the holiday. It has a cause, though, and a few simple habits at the table change it. “Let your moderation be known unto all men. The Lord is at hand” (Philippians 4:5).
Is it the turkey?
Most people blame the turkey. Turkey contains tryptophan, an amino acid the body uses to make serotonin and melatonin, so it gets the credit for the afternoon nap.
Turkey has about the same amount of tryptophan as chicken, and nobody blames chicken for a nap. Tryptophan also has to compete with several other amino acids to get into the brain, so the tryptophan in one helping does very little by itself.
The rest of the meal does most of the work. A plate heavy in starch and sugar lets more tryptophan into the brain than the turkey does, and any alcohol at the table adds to it.
What happens after a big plate
The size of the meal. A large plate asks a lot of your digestion. The body sends more blood to the stomach and gut, and the side of the nervous system that handles rest and digestion takes over for a while. You feel calm, heavy and ready for the couch.
Sugar and refined starch. Rolls, stuffing, sweet casseroles, pie and sweet drinks all reach the bloodstream quickly. Blood sugar climbs, insulin rises to bring it down, and an hour or two later many people feel the drop. That drop is when you feel tired and find yourself back at the dessert table.
Rich, heavy food. Gravy, butter and fried dishes slow how fast the stomach empties, so the full feeling lasts well into the evening.
The more of these on one plate, the bigger the slump.
How to eat so you stay awake
Start with a raw salad. Raw vegetables bring fiber and bulk, and they take up room before the heavier dishes arrive. Researchers in Japan found that when people with type 2 diabetes ate their vegetables before their rice, their blood sugar rose noticeably less after the meal.
Chew slowly and set your fork down between bites. Digestion begins in your mouth, with enzymes in your saliva. Eating slowly also gives your body time to tell you it’s full before you’ve overdone it.
Leave your water off the dinner table. Water and other drinks dilute your digestive juices and the enzymes that start in the saliva. Drink apart from your meals.
Fill your plate once. Use an ordinary dinner plate, fill it with what you want most, and wait twenty minutes before you decide on seconds. Most of the time you’ll find you don’t want them.
Take a walk after the meal. A 2022 review in Sports Medicine found that even two to five minutes of light walking after eating lowered blood sugar compared with sitting. A fifteen-minute walk around the neighborhood with family is a good tradition to start.
Save dessert for later. Have a small piece after your walk, once the meal has had time to settle.
The next morning
Go back to your normal day. Start with a glass of fresh vegetable juice and a serving of BarleyMax, and make lunch a big raw salad. Skipping meals to make up for the day before usually leaves you hungrier by evening.
You can enjoy the family table and still leave it with energy for the rest of the day. God gave us food to enjoy and a body that knows what to do with it when we eat the way He designed us to.
Frequently asked questions
Why do I want dessert when I’m already full?
After a meal heavy in sugar and starch, blood sugar rises and then falls. The fall brings a craving for something sweet, even on a full stomach.
Is it normal to feel sleepy after every meal?
Steady energy after eating is what your body is built for. If you feel heavy after ordinary meals, look at how much is on the plate, how much of it is refined starch and sugar, and how fast you eat. A nutritionally minded health care professional can look further if it continues.
Will a nap help?
A short rest is fine. A walk does more for your blood sugar and leaves you more awake for the evening.
Do I have to skip the holiday foods I love?
No. Start with the salad and vegetables, take a smaller portion of the rich dishes, and walk afterward. You’ll enjoy them more and feel better.
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Sources
- U.S. Department of Agriculture, Agricultural Research Service. FoodData Central: tryptophan content of roasted turkey and chicken. fdc.nal.usda.gov.
- Fernstrom JD, Wurtman RJ. Brain serotonin content: physiological regulation by plasma neutral amino acids. Science, 1972;178(4059):414-416.
- Wurtman RJ, Wurtman JJ, Regan MM, McDermott JM, Tsay RH, Breu JJ. Effects of normal meals rich in carbohydrates or proteins on plasma tryptophan and tyrosine ratios. American Journal of Clinical Nutrition, 2003;77(1):128-132.
- Imai S, Fukui M, Kajiyama S. Effect of eating vegetables before carbohydrates on glucose excursions in patients with type 2 diabetes. Journal of Clinical Biochemistry and Nutrition, 2014;54(1):7-11.
- Buffey AJ, Herring MP, Langley CK, Donnelly AE, Carson BP. The acute effects of interrupting prolonged sitting time in adults with standing and light-intensity walking on biomarkers of cardiometabolic health in adults: a systematic review and meta-analysis. Sports Medicine, 2022;52(8):1765-1787.
Educational content. Not medical advice. Talk with a nutritionally minded health care professional about your own health.
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MyHDiet.com — plant-based nutrition, enzymes, detox foundations
WipeOutToxins.com — toxin-free living and prevention
CleanseYourBlood.com — circulation and blood-flow support
HealthRetreat.com — Hallelujah Diet Health Retreat
AMPMForHealth.com — everyday wellness rhythms and curated tools
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