Why do we feel sleepy post lunch? It is not the food, read truth here

Have you ever been so exhausted after lunch that you just wanted to take a nap? 

It happens to all of us and that's tempting to assume that's just because we ate so much, but there's more to it.

Our bodies follow a natural circadian rhythm, a 24-hour cycle that governs our sleep-wake rhythms.

Afternoon sleepiness is often caused by a natural drop in awareness, which happens between 1:00 PM and 3:00 PM.

This dip is part of our internal biological clock and indicates a period of lower wakefulness.

When we eat, our bodies direct energy to the digestive system, which breaks down food. 

This procedure necessitates increased blood flow to the digestive organs, causing a transient decrease in blood supply to the brain. 

The shift of resources might cause sensations of lethargy and drowsiness.