According to Tony Horton, the man behind the program itself, the P90x lean program is designed for those people who want a slightly less intense and more cardio-based endurance routine. The results of this program are unique and there are positive changes in your lean body mass. The training regime is targeted towards cardiovascular exercises, thus burning off extra fat and helping you lose weight.
I actually did the classic schedule and mixed in a few doubles days when I felt like I was in “Beast Mode,” but I know people who did the lean P90X schedule and got great results. You may actually sweat more doing the lean vs the classic, which is the most popular schedule of the three.
p90x lean program
My P90X Results: Choose the Lean, Classic or Dual Program to Achieve Your Goals
The Difference Between P90X Lean thailand email list Program & The Others.

The classic P90x program consists of 3 resistance workouts, 2 cardio workouts, and 1 day of yoga training per week. The main goal of the classic version is to increase the muscle tones of the body in a lean or bulky way. The difference is whether you go for light weight and higher reps for lean muscles, or heavier weight with fewer reps to build mass. With additional cardio, you are sure to get that lean beach body look they promise. At least I have done it and many others I know personally. So yes, it works when done right.
The P90x lean program is not a walk in the park or eating ice cream on a cool afternoon. It is intense and aimed at reducing body fat quickly through more cardio exercises. Although almost all exercises and workouts of the same type are performed in both the classic and lean schedules, the patterns and intensity differ to some extent. For example, this schedule does not include chest workouts until week 5, and plyometric training is completely omitted.