The Sims Playstation 2 Help?!?

Okay so my sim is a stunt devil and I am on level 3 of my job and I need to get promoted to move out of Mimi's house, but It's really hard to keep my sim happy and to get her to work out on the treadmill and go to work. So are there any cheats to get past Mimi's? And, does anyone know how many times do you have to complete a full treadmill work out to get a body skill to level up in the stunt devil job level 3? Please help! I need to get past this, thanks.