For comparison, typical P90X, Insanity and Combat workouts provide me calorie burn ranging from 300 – 800 calories per workout (workouts up to 60 minutes in length) with average heart rate and zones similar to P90X3. How Many Calories Does P90X3 Burn. P90X3 Phase 1 – Calories Burned. CVX – Calories = 625 Avg HR = 171 Max HR =189. For comparison, typical P90X, Insanity and Combat workouts provide me…