What is the P90X Lean workout program?

The P90X Lean workout program is a comprehensive fitness plan designed to help individuals lose fat and tone up while improving their overall fitness. It's part of the larger P90X series developed by fitness guru Tony Horton, and it specifically caters to those who prefer a slightly less intense approach compared to the original P90X program. The Lean routine emphasizes cardiovascular and muscle-toning exercises with a balanced mix of resistance training, plyometrics, yoga, core work, and stretching. It operates on the principle of 'muscle confusion,' which aims to prevent plateaus by constantly varying the workout stimuli. The structure is a 90-day routine broken into three progressive phases that demand rigorous discipline and commitment, coupling the workouts with a detailed nutrition plan for optimal results.