How do you make your sims younger on sims

open the cheat box (Ctrl +shift+c) and type in "testingcheatsenabled true" and click on any sim and edit
u can have allot of fun u can change strangers into toddlers
LOL

^^^^ but there can be glitches by doing that. Here's an EASY way that won't get glitches!!

1. on the sims 3 main screen type 'testingcheatsenabled true'
2. load your sims 3 household
3. click on the sim who you want to make younger.
4. go to the sim's lifetime happiness
5. hit control and click between the chest and the numbers (hold control the WHOLE time)
6. this should add 1,000 lifetime happiness pts each time you click.
7. after some time of clicking (make sure you have quite a lot of life time happiness points.) click on lifetime happiness and you should get a list of things you can get. Go down to the very bottom and click the 'YOUNG AGAIN POTION'.
8. After this u can use it and become a young adult again.

************** hope this helped!