- For relax
FM3 BUDDHA MACHINE
http://www.fm3buddhamachine.com/site/?page_id=29
via http://lifehacking.jp/2007/09/3-tips-for-concentration/
- For daytime nap
Polynap MP3 Soundtrack - a huge help in adapting to polynapping
http://www.placebo.serv.co.za/?page_id=7
via http://labs.cybozu.co.jp/blog/akky/archives/2007/06/power-napping-mp3.html
- For concentrate
Download a ...coffee replacement, really! | Anabubula.com *
http://anabubula.com/node/26
via http://www.popxpop.com/archives/2007/01/coffee_replacement.html
Especially, the coffee replacement sound is interesting. I feels the sound shaking my brain :-)