My workout isn't working

I've recently begun doing yoga in the mornings with Deni Preston as my trainer. She shows up in my living room every other morning at 9 a.m., breaking up Mario's Party. Little Padawan isn't happy about it.

I have quickly learned that yoga should not be practiced at home. As I begin my workout, sporting my best mula bandha, navel locked, tailbone tucked, spine open, shoulder blades down, Dutch Baby asks for a cuppy for water. Padawan asks how much longer until he can play Game Cube. Dutch Baby spills her cuppy. My hands are at heart-center in Sun Salutation A and Padawan wants to know, "Now how much longer?"

Downward dog is nothing more than an open invitation for a kid to climb on my back and push the other kid off. That's usually when I give up. Child's pose isn't restful or meditative under such raucous conditions.

I have yet to find the perfect solution to how to work exercise into my day. Too hot for an outside run, too expensive to sign up at Curves. No treadmill on the premises. What can I do, but embrace my limitations and downward-doggedly continue with Deni? I have little hope yoga will bring me spiritual transcendence or physical prowess but my arms are sore afterwards so it's beneficial somehow.

Any tips out there to working in a workout? I guess I could always do my Keigels while I blog.