Teen Mom 2's Kailyn Lowry is the proud new mama to an adorable baby boy named Lincoln Marshall Marroquin, and her life has been busier than ever since his birth on November 16. Sure, Kailyn has experience with babies thanks to her son Isaac, but she's had to get reacquainted with taking care of a newborn — and you know what that means! Sleepless nights, dirty diapers, random bouts of vomit, and a whole lot of cuteness.

Kailyn won't have much time to take care of herself now that she's looking after an infant 24/7, but this gal is already eager to drop those post pregnancy pounds! She can't wait for her body to recover from labor so she can start working on her fitness, and recently tweeted, "Is it selfish to say I can't wait to get back in the gym already?"

Most doctors recommend that new moms wait six weeks after delivery to start exercising, so Kailyn has a long way to go. But the good news? Girlfriend is breastfeeding, which means she's burning hundreds of calories a day just sitting around her house watching TV! Good thing too, because Kailyn seems more than eager to shed that weight, and tweeted, "I'm determined to get fit again after this pregnancy!"

Luckily, Kailyn didn't gain too much weight during the nine months that Lincoln was chillin' in her belly, so getting in shape should be a breeze — and we can't wait to see this gal's transformation into a lean, mean, fitness machine!