I've been to the gym on and off for years, but never really seriously trained for any large amount of time, so I consider myself a "Beginner".
I finally got back to the gym after a 4 month break, and I notice with certain body parts, I have no endurance. Granted, this was my first workout in a long time, but I got through 3 sets of back (Chins, lat pulldowns, CG cable row), and started bi's. Got through one set of cable curls (Freemotion), did one rep w/ an easy curl bar, put the bar down, went to get a drink, came back, bar was gone ... so I went to one of the curl machines because it was all I could get to, and I couldn't do one rep, even of 30 pounds.
It's extremely frustrating for me, because it used to happen to me when I went with a friend to the gym. He'd think I was bitching out, but I'd psych myself up, and try my absolute best, and not give up, I just can't get my muscles to respond. I get to this fatigue point, and it's over.
I don't believe I'm over lifting.. I'm concentrating on form, and even dropping weight if I find I'm tempted to use momentum at all to help me finish sets.
Is this normal? Is there any good way to fight this?