Started HIIT about three weeks ago, and loving it. I do that two of my three cardio days. My weight fluctuates a lot, but I've never crested 170lbs. Right now I'm 5'11" 165lbs. I'm at a plateau I can't get over for the life of me on incline and flat bench (Germ, help me out here, why is this?). I'm doing 5x5s for incline and flat. My flat sets are:

135 (warm-up)
175
195
205
210 (usually only get it up 3 times).

My incline is as follows:

135
145
155
165 (and I can't get past that)

Oh, and I know, I'm a wimp[&o]