The LA Times is reporting that P90X is a good cardio workout:
The P90X workout is an incredibly popular home-based, boot camp-style video exercise program that some fitness fanatics swear by. But does it do the job? A study of the system finds it does improve cardio respiratory function.
Shocking. Next week, the crack team of reporters at the LA Times will blow the cover off another bombshell: that resistance training is an effective way to build muscle.
