| robin don't sacrifice your form just to lift extra weight I once hurt my traps/neck doing dumbell shrugs. My old gym only went up to 50kg dumbells each so I went for 50 reps with them and on the last few I was cheating a bit, turned my head slightly and hurt my neck and had to were a neck brace for a couple of days.
just add weight when you can.
I am always sore in my traps for a couple of days after. I might try some static timed dumbell holds with no straps as my gym is not very big and always a mess and I would not want to trip up.
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You can't grow without pain!
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