heavy deads. And one thing a buddy of mine did that I tried and just fried my traps was...start with 100lb dumbbells and do 1 rep, immediately rerack and get some 95lbers and do 2 reps, 90s for 3, 85s for 4, etc, etc. Go down to about 60s or so then go back down the rack without stopping until you get back to 100s for 1. Try it. And dont use lifting straps.