Add two young kids to the mix and the task becomes even more difficult, which is exactly Jessica Simpson's dilemma at the moment.
A source tells OK! Magazine that Jessica is "really, really frustrated" as she tries to shed the pounds she packed on while pregnant with second child Ace Knute Johnson.
While Jessica became a spokesperson for Weight Watchers after giving birth to her first child, Maxwell Drew Johnson, the source says that losing the weight has been "really difficult this time around."
Apparently, Jessica is torn between spending the time fighting to get her figure back and wanting to spend the time with her kids instead, with the source saying she "feels really guilty whenever she leaves them."
It seems that a lot of moms struggle with the same thing, as Shakira recently revealed that she hasn't been hitting the gym as often since the birth of her son Milan because she'd simply rather spend the time with him.
Still, we're sure that Jessica will get her figure back in fighting form eventually (the baby is only six weeks old, after all!), but we can definitely understand why she's having such a hard time.