Use the up and down arrow keys. Too fast? Sorry, I tried to make it go slower but there were problems having to do with the sizes being integers. Remix and add yourself in/at one of the beds. Please! For best results, don't use a new sprite. I provided loop scripts, so you can make a multiple-costume animation.
Credit to EVERYONE in the ENTIRE COMMUNITY!! Sample here: http://scratch.mit.edu/projects/13405217