you know how there are three buttons on top of the iPod- two for volume and one to make your iPod sleep or wake or turn off. if you would like to listen to music while running and so that you wouldn't touch the screen by accident, you have to push the button once. and when you want the screen to pop on again, all you have to do is press the button again. it should work so that if you turn the music on and step-counter on and then put it on "fade-mode", all your actions should stay working. and as soon as you press the button again, everything should appean on-screen.
what i was trying to say before was that my iPod turn compleately off when i would like to run or listen to music and so i lose all the data