So today i was kinda fooling around when i came downstairs and saw that i left some weight on the bar. (keep in mind i am skinny and weak) So it was 130 and i just dropped down and did it once, then i just thought i would up it a little, went with 140, then 150, but 150 was really hard. So i thought its cause i didn't warm up. So i did some lower weight to warm up and then i couldn't even get 150 up. That ****ed me off because a couple weeks ago i did 165. I also usually work out with 120-130 sets of 5, so i thought 150 wouldn't be very hard for 1 rep. The thing is for the last 2-3 weeks i have done basically only squats and dead lifts for my work out and occasionally do some bench at the end. I have seen really really good improvements in my legs and back for the short period of time, but why is my bench lacking? I thought squats and deads would increase it?