there is a machine that takes some weight off of them....
but if not do negatives. start at the top of the pull up and go down as slowly as you can. also do pull downs, reverse curls and curls, and bentover rows.
make sure to have a wide grip when doing the pull ups, it incoporates more back muscle into the movement
Mac Danzig and his bird feeder once visited the Virgin Islands. They are now The Islands.
Mac Danzig can kill two fighters with one bird feeder.
Superman owns a pair of Mac Danzig bird feeder pajamas.