During my workout tonight, I was doing shrugs with dumbells, first a warm up set of a 30lbs in each hand, when I experienced my right forearm go very tense, the whole muscle [if there are more than one muscles, they were all tense], like rock hard. My fingers were a bit numb, but I didn't really notice it till I was done with my set. I gripped my arm with my left hand, it was rock solid, not normal. I mean, my arms get a little veiner, but not rock solid. My left forearm was also hard, but not as much as my right.
It didn't hurt, so I didn't worry too much about it. I continued to up my weight, doing a 45lbs in each hand, followed by my last 2 sets, a 60lbs in each hand. After I was done, my forearms were still rock hard, but no pain, nor did they feel any more swollen then when I first noticed it on my first set.
I moved on to my other workouts, overhead military dumbell press, lat pull downs, etc. I got it all done, then started my 20 mins of low-intensity cardio [little cutting]. My forearms were still swollen. I stretched then went to locker room where I took my creatine in water, and came home. I just touched my arms now, and they're back to normal, flaccid.
On a sidenote, I just now flexed my arm, the forearm, getting it hard, but remembering back, when it was swollen it was much more tense, I can't seem to re-create the state now, leading me to believe it was some sort of painless cramp of some sort.
Did I experience to "pump" everyone raves about, or was this some kind of temporary injury?
__________________ 23 yo, 6'5", 205 lbs. Cutting phase, to lose 15-20 lbs by June 10th. -- self-proclaimed forum newb, dedicated past pain and injury. I will eat concrete if it gets me results. Training Log | 
Hitting the road hard and Im not F'n looking back till I hit 220! 
