Currently I run for 90 - 120 minutes once or twice per week. Could this be limiting my muscle gains for weight lifting? Whenever I run, I'm careful to eat enough to offset any calories I burn while running. Also, I keep my bodyfat around 10%, so it shouldn't be necessary for my body to break down muscle to fuel running. Is this reasoning correct, or should I reduce my amount of cardio if I want to gain more muscle?