I found something that annoys me in World Adventures! The songs they learn on vacation! It's not the songs themselves that's annoying, it's the Sim singing that song over and over again. No wonder it drives the other Sims around them absloutly NUTS!
About the pregnant Sims statement, Thomas and Lilygirl, you are right, however, I've seen pregnant women on the treadmill, and the doctor says it's okay in the hot tub, (I know a few that have done this), as long as it's on the lowest settings. So maybe they should allow a pregnant Sim with a high athletic skill use the treadmill, but only on the "pacing" option.