tonight, i did all chest area work outs which consists of: bench press, decline bench press, dumbells on flat bench, and other misc. after an hour and half of working out the chest, my afterpain effect seems to be on my upper arms/shoulder/around armpit area. any idea why is that? the way i saw it was if your working out one area, that area will be taking the soreness the night after (legs/thighs/biceps/etc). ?????