- Shocking and surprising your body constantly. If you do the same things over and over again, you'll end up in the same place since your body adapts to it. - This is kind of similar to the [[Upper Limit Problem]] where your body has decided this is the internal limit. - The equivalent of this in happiness is basically building relationships since people are unpredictable ---- Scott Galloway in Algebra of Happiness - [Link](https://www.youtube.com/watch?v=-gfEjOgxBfI)