The reason you become creative in the shower is that it’s (mostly) impossible to be distracted. You’re just there—naked—with your thoughts. And suddenly you become a genius.

you can prove this by just sitting in a quiet place with no inputs for 5-30 minutes.

In a nutshell:

1. In our natural, idle state we produce a replenishing pool of creative water.
2. Being distracted siphons off that creativity into nowhere.
3. If you value being inspired, spend time alone with nothing but your mind.