After completing a set, I rest for 30 to 60 seconds, depending on the intensity of the workout. At times, during my arm and chest workout, I get so tired that during my rest periods, I sit down, as standing up and doing things like jogging doesn't help my arm muscles feel relaxed. I do the same thing too for leg workouts. Then I wondered if that could hinder my muscle growth or endurance.
Note - I am somewhat lean and toned with average muscle size but not as much as I need