Help. Can't do a single pullup, no lat development. in Bodybuilding/Strength Training Posted January 12, 2013 I third negatives - I'm a big girl (6' tall and 176lbs) and they are hard for me too. I do negatives and then use bands for support on the concentric. I'm down to the smallest band and can get "half" a pull up at this point. I couldn't even retract my shoulder blades from a dead hang to start and I would drop like rock trying to do the negative - now I have a controlled negative. Don't give up!!