How do you think?

Why can’t we just think in isolation, without the 'so-called ‘help’ of catalysts? My man, he cannot apparently think without smoking. Some friends of mine can’t come up with ideas unless they wash down their throats with mugs of coffee. Some need alcohol, some food and I need gallons of water in the shower. I ‘think’ in the shower. These days, I’ve been trying more eco-friendly methods like making bigger pots of cha. That seems to work ok.

What do you do to think? And I am not talking about taking a walk, jogging etc. Those I think are- clearing the mind- activities. I am here, asking you, what is your thought catalyst?