- The larger the meal, the more energy it takes to break it down, said Alyssa Tucci, a nutritionist at Compass Nutrition, in a phone interview.
- Blood flows to the digestive system, putting less resources to work on other bodily functions — like staying upright and awake.
- Other than the quantity, the quality of the food also plays a role in your overwhelming grogginess.
- Starchy, sugary foods have a high glycemic index, which makes your body release lots of the energy-giving sugar glucose.
- As your blood-sugar levels increase, your pancreas begins to produce the hormone insulin to help your cells store that energy for later.
- As a result, the sugar is taken from your bloodstream and your blood sugar levels crash. Just thinking about that spike-and-drop sequence is tiring. Read more
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