Post Lunch Fatigue

Just as night follows day I struggle to stay awake after eating lunch. I usually sit for a bit & maybe play mahjong or solitaire on my tablet, or read a book. Even if I'm doing something on my computer, my eyelids drag themselves down & I do start to drift off.

My calvanistic upbringing decrees that my days should be productive, so sleeping isn't an option. I have to get up & do something. Things need to be crossed off my "to do" list.

However, I've been talking to someone who told me about "post lunch fatigue" - post any meal actually. But it is more of a thing at lunchtime for me. The scientific name is postprandial somnolence. Apparently it's caused by high-carbohydrate meals that cause a rapid blood sugar and insulin spike, or by high-fat meals that are harder to digest and divert blood flow from the brain. Blood flow to the digestive tract is increased.

We know so much more now about how our body works & how complex a system it is. High-carb meals lead to a surge in insulin, which can cause a subsequent drop in blood sugar, resulting in a feeling of energy loss. Eating triggers the release of serotonin, a hormone that promotes sleep. More blood being directed to the digestive system to process food, can lead to reduced blood flow to the brain, so we are drowsy.

Apparently the solution is;-

• Eating smaller, lighter, balanced meals
• Being hydrated 
• Light exercise to re-energise the body & increase concentration
• Mindful eating

Who knew?

I thought it was simply an ageing thing & I fight it. I don't want to waste the time I have left alive by sleeping, except at night time. On the other hand my nights are very disturbed & I wake a lot & don't get prolonged restful sleep. 

So I'm now thinking I should look at time differently. Just follow my circadian rhythm. I should listen to my master clock in the suprachiasmatic nucleus (SCN) of the brain. 

 

I don't think my body likes the current routines my brain has created.