Training.

P90X D3 - Shoulders, Arms, Abs

Inspiring/Awesome Work - What are a few months? If it’s important to you begin it now! | Norcal Strength & Conditioning:

"Sarah began training with us in February of this year, just a little over 3 months after [her baby] was born. As the mother of 3 boys, she needed to do something for herself and for her body. Now after 7 months... she is a completely new woman! Check out these stunning before and after photos!"

More before/after pics at the link.  The young lady above also keeps a blog/site at Everyday Paleo, and is launching a book of the same name that looks like it's going to go on my ever-increasing Amazon.com Wishlist...