Determined to stay healthy during her pregnancy, Kim Kardashian hit up a fitness center in Studio City, California this morning (4/5/2013).

Chatting away on her mobile phone, the “Disaster Movie” actress dressed all in black to camouflage her growing baby bump, though she looked to be in great spirits.

And it’s no secret that Kim has been enduring some ridiculous criticism for gaining weight while carrying her bun in the oven, though her sister Kourtney Kardashian gave her a heads up early on.

“Kourtney warned me when you become a mom and become pregnant, there will be this whole new group of critics that will criticize me for everything you do. If I wear one color clothes, I'm in this kind of mood. Or if I wear heels, they're harmful."