I have had 2 surgeries recently, it depends on the skill of the RN who removes it, it only "tickled" once and hurt like hell (felt like a golf ball was being pulled through!) once.....they are not...
Getting blood work done will probably tell the tale if it is something metabolic, (I.E., low test, Thyroid, etc.), if those things are in check I would look towards over-training as the culprit, you...
Your "warm-up" sets only have to have around 10-15% of your max capability on the bar, high repitition is the key to warming up, for exapmle you might do 2 warm-up sets and 4-6 working sets for chest.
