Want to lose some serious weight and get into shape? Then go on Dancing With The Stars. That just reversed the effects of pregnancy for Christina Milian. From E!:
Only 2 weeks into [Dancing with the Stars] and Christina is reaping the benefits of the ballroom. The singer caught up with E! News at the 2013 ALMA Awards and revealed she's getting into pre-motherhood shape!

"I'm feeling my buns getting nice and firm," the contestant shares. "I'm feeling my stomach tighten up in all the right places and it's getting nice and small so...I feel like I'm getting that pre-baby body again!"
Just take a look at her. That's some solid stuff, son. Note to self: dance more.