It used to be that if a man wanted to build muscle, he had to choose between doing cardio and weight training.
Lifting added mass that doomed stamina and endurance for aerobic athletes, while cardio preferred the incorrect muscle fibers for gaining strength and muscle.
As a consequence, there was a schism in the athletic community that fostered a pernicious dogma: runners weren't lifters, and lifters weren't runners.
Fortunately, research has confirmed what many elite athletes may have told you all along: for the majority of fitness objectives.
Add cardio to your lifting routine to increase your stamina and training volume so that you can smash out more repetitions and exercises in each session.
Weight training may increase not just the speed, economy, and power output of aerobic athletes (runners, cyclists, rowers, etc.), but also their time to fatigue.
Researchers at the University of Oklahoma found that weight training increased VO2 max in these athletes.
The question is now not whether you should incorporate cardio and strength training into your workout program, but rather how to do so most effectively.
If you are too busy to perform them in separate workouts, which to do first during an individual workout, or which to do first on the same day.