It will to some degree,But I would rather have my body adjust to doing cardio with the extra weight as I add it then struggle to do things once I have added the extra 20lbs,that was my story first cycle,no cardio added 15-20lbs and couldnt do much cardio because my body wasnt use to the extra load. now on second cycle my cardio wasnt intense but I would walk on a 15 degress incline for about 45mins 3 times a week,still added 15lbs