Workout question(jamo)

Jamo,

Quick question- My workout partner and I have been trying something that he suggested that he used to do back in his competing days...Both of us want to bring up our rear delts, as they are not quite as developed as the front...so we wave been doing some light dumbbell and band work in between sets on chest, and back day, sometimes arms day as well, not working the muscle to failure, but just giving it a light workout between sets and pumping some blood in there and working it a little bit, then giving it a full workout on shoulders day....

Question is, is this a good thing to do to bring up a lagging bodypart, or is it just going to overwork the muscle and put too much stress on it, especially since it is a smaller muscle that gets worked on back day anyway?

Thanks!

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