Just to note - Insulin resistance is nothing you can 'feel'.
It will add weight yes. It will cause higher blood sugar yes, and is not ideal.
The best and EASIEST way to increase insulin (In a normal, healthy body - read no diabetes) is eating a low carb diet.
Working on sleep + diet can and will result in drastic changes.
"The most merciful thing in the world, I think, is the inability of the human mind to correlate all its contents... some day the piecing together of dissociated knowledge will open up such terrifying vistas of reality, and of our frightful position therein, that we shall either go mad from the revelation or flee from the light into the peace and safety of a new Dark Age."
-H.P. Lovecraft