Now That's Somethin'

Excellent Review Article.

Orexin A Controls Glucose Metabolism

It regulates insulin.
And liver functions.
And Brown Fat.
And energy to your muscles.

This is interesting-  orexin functions differently if you're bingeing or fasting...
If you're starving, it releases glucose from your liver to your muscles.
If you're not, it stimulates insulin to store the glucose as fat.

It's all there.  So Pretty.