The proof is in the numbers people. You have to incorporate weight training to build lean muscle and burn more fat. I burned fat for 50 minutes weight training for and 1hr and 15 minutes as opposed to last time I only burned fat for 17 minutes out of my hour and 30 minutes work out and that time I mostly did cardio. Goes to show you 50 minutes vs. 17 minutes of fat burned? Who wins? I would say weight training. It’s not about losing the fat with cardio then toning up with weights later, it’s about incorporating both people! Get it done!