I have begun the Stronglifts 5x5 program. I am constantly working on my form for all exercises, but I think I'm not terrible at any. I do have a problem with the overhead press, that is potentially dangerous.
I am following the form the best I can, imitating the Stronglifts website. When my arms are locked (and the weight is at the top, my chest and head have moved forward, and my glutes are contracted), I sometimes feel like I'm going to tip back. I shift my body weight forward to avoid doing so. This also occurs when I start to bring the weight back down, sometimes.
This isn't every rep, just once in awhile. But the consequences of falling backwards with this weight overhead make me take this issue very seriously. I am working with low weight now (55lbs or so), and don't want to increase the load until I fix this issue.
Is there any obvious issue that's likely behind my balance issues with the overhead press?