Hi LaTonya,
Yes I really eat whatever I want and as much as I want on my cheat day. I have at least one thread here where I listed out what I actually ate one Sunday but I can't find it at the moment. But to put it in perspective, I'll start 'cheating' around 10AM and eat high carb and high fat foods with little to no health value all day long. I tend to stop eating on cheat day by 8:30 because there is so much junk in my system I need a couple hours to digest it before I go to bed.
If the family decides we want to go to a movie, we'll do that on Sunday so I can get a bucket of buttered popcorn and enjoy it. If I want fast food, Sunday is the day to indulge. One Sunday we had fried chicken, french fries and biscuits with butter for dinner. How bad is that? Another Sunday our morning 'snack' was Pillsbury cinamon rolls and bacon. Trust me, after a day of stuffing yourself with junk, you'll feel sluggish and bloated and you'll actually want to eat well the next few days after a cheat day.
To commit to a healthy lifestyle for the long run I'm of the belief you need to have cheat days. They are good for you psychologically because you always know you will have a day not too far off that let's you eat anything your heart desires so the immediate temptations that hit you everyday are far more easily ignored. And the cheat day keeps your metabolism from getting too efficient and making do at lower calorie levels which will halt your weight loss. It seems odd that be eating BIG one day of the week will actually help weight loss but for long term calorie restricted diets, cheat days really do help weight loss to continue.
Don't overdo on the exercise. P90X is an intense workout program and your body needs time to recover. On the run you want to start training for, I'd push the start of your training back to the beginning of July or later. The thing is that while doing P90X even though you are not running the body conditioning impact of P90X will make running easier. Too much exercise will spike your body's cortisol levels which will slow or even stop your weight loss and impair your body's ability to build lean muscle. More is not better when it comes to exercise!
Nancy
P.S., did you catch my list here on the protein powders I like? You can find them at http://www.pressplayfitness.com/members/forum/#topic/Protein-Powders.htm.