Muzzman
Pocket Rocket
Take a look at the 'Alexander Technique', a specific breathing and alignment technique that I use often and which you can practice in bed too. 5 mins of deep breathing sends me off to sleep. I tend to breathe in for 5 seconds, hold for 10 secs and then slowly let your breath out for 20 secs which does the trick for starters. Once you get better at this you can find yourself doing some impressive things. I can breathe in for 5 seconds, hold for 30 and slowly let out the breath for over a minute. Effectively breathing in once every minute and a half at least.