It is because it is more taxing to your body if you don't have good posture while typing. It is a great habit to have especially when you type for long hours and when you type the "right" way since it will really help you progress in your quest for speed.
http://wiki.answers.com/Q/Wh y_should_you_have_good_posture _when_keyboarding
Answered by
Nishu%27s
at
12:39 PM on November 02, 2008