It’s a common misconception that regular amounts of cardio reduce your muscle mass, make you weaker, and make you appear smaller. Fortunately for us, I can confirm that this is a load of Bullsh#t.
The misunderstanding seems to come from the physique of our respected Olympians. Endurance athletes such as Mo Farah maintain a very lean physique due to excessive amounts of cardio, their lifestyle, and diet. Now I’m not telling you that you can train like an Olympic long distance runner and maintain your muscle mass. (Because unfortunately that’s a little out of the question) However regular runs, and interval training will serve their fair share of benefits, without compromising your precious appearance.
In fact, “Avoiding resistance workouts altogether is why you lose mass – not cardio. In fact, introducing cardio into your workout plan is key to bigger muscles.” says David Kingsbury. (Hugh Jackman’s PT)
Here is the science behind it:
“Intense intervals will encourage the body to use energy more efficiently and increase the amount of glycogen your muscles store, which makes them bigger,” Not convinced? There’s more: Intense cardio sessions can improve your muscles buffering capacity (your muscles’ ability to neutralise lactic acid). “That means you can push reps even harder while avoiding DOMS.” (Delayed Onset Muscle Soreness)