Originally Posted by Jesus H Christ

Absolutely. I would never do p90x. There are no short cuts and I am willing to bet a year from now you'll be back in the same shape you were before you started.

Now, if you actually read my post it has nothing to do with YOU but in general. There are too many variables, lack of information, or the OP level of workout experience, age, or the type of weight loss/strength he is expecting and there is no possible way you would know.

Again, my suggestion is he first learns how to control energy and water management before starting a program like that.