1. To postbone you overcoming it until tomorrow or in 5 minutes. Often people would tell them self something like, I'll just see this funny cat-video and have more energy. But often that's not what is going to happen though.

And when I'm not seeing a funny video I just found about people falling on a very slippery slope I'll tell you more reasons.
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence