Hard to phrase the question right but as i've gone months training traps i've noticed that i'm getting thickness and height but I can't get that 'lump' of sorts to where you can tell from the back. I thought it was maybe a body fat % thing but I started noticing guys with much more fat than me still have them.
So the question is what causes that lift in the back? is it certain exercises or genetics? If it's the first please throw in some trap routines you guys use that have those massive traps