"Why do we get sleepy after eating a big meal?"

The nap is a cliche in Spain around the world, that's true, but... we have a justification!

We have two organs that need more energy to work properly in our organism when our eating time ends. This organs are the brain and the intestine. That happen because we don't have red blood cells enought in our brain. why? because the brain send this red blood cells to the intestine to help break down the food and carry the nutrients all over your body.

The rest of the body takes this time to slow down and relax.

So... if you have little blood flow, you feel tired. and... what is the solution? The spanish siesta!