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Yeah, I add anywhere between 2.5lbs - 5lbs reps every set, and sometimes on my last set i will add 7.5lbs - 10lbs, but thats really rare.
I mentioned that i run before i weight lift to get my heartrate up, so i dont neglect running, or my heart or lungs for that matter.Mad_AxMan said:running doesnt just increase stamina, it also increases bloodflow, and strengthens your cardiovascular system, enlarging your lungs and heart.
id love to see you in 10 years when your lungs cant take in enough oxygen for all that muscle.
remember, aerobic exercise = oxygen + glycogen ---> water + co2 + ATP (energy)
aerobic exercise doesnt just mean extreme movement, in fact, aerobic reactions take place in your muscles every moment of every day. if your lungs dont grow, they wont be able to support massive muscles, its as simple as that.
on top of that, running DOES build leg muscle, just at a much slower and less noticable rate than weight exercises (unless your like me, and use a backpack).
i challenge you to stand toe to toe, with any of my rugby playing friends, and not get flattened.