do push ups until arms tired, then do sit ups until tummy ache,
then do squats until legs pain - then sure can sleep.
also, the ambience in your room oso very important, its it too
stuffy ? too noisy ? too bright ?
play soft music in the background, count sheep ? count from 1 to
1000 and from 1,000 back to 1 - before u noe it, u koonz liaoz...
