The Worst Diabetes Advice – Dr. Berg
https://www.youtube.com/watch?v=hcWdwc94lzI

Carbs are really like booster fuel for an engine -- an over-energetic mixture for which the engine wasn't designed. Most people are constantly running on booster fuel, yet their engine is mostly idle.

Are you going for a 7 km run in a few hours? Fine, you are allowed to eat some extra carbs. Are you going to sit in a chair for the rest of the day? GTFO.