I can't find a definition anywhere. Is it just mass without body fat? Is it possible to have lots of muscle mass and low body fat and not be tone? What does that look like as opposed to someone with lots of muscle mass, low body fat and tone? or, are mass and tone mutually exclusive (you can have one or the other but not both)? Lots of workouts say to do low reps with more weight for mass but high reps with less weight for tone. So, is tone just some muscle mass with more endurance?
Thanks for any help clearing this up.