&gt; I also don&#x27;t understand what you mean by &quot;low quality muscle mass&quot;.<p>Muscle with a low weight to power ratio, and&#x2F;or with an unfavorable type I to type IIa&#x2F;b ratio. E.g. you can quickly bulk up by lifting 3 x 3 at a high weight (or whatever Starting Strength recommends), but you&#x27;re going to develop much lower quality muscle than if you just do 6 x 10 or whatever in terms of power. And similarly if you&#x27;re not doing cardio in at least 90 minute increments then on a regular basis then your type II muscles aren&#x27;t going to be able to properly utilize fat, because they&#x27;ll never get past the point of just relying on stored glycogen or whatever.