With how many blinds do you usually enter push or fold mode? in regular and turbo tournaments, in my case between 10 and 13 bb I start to push fold
depends on the situation.
in some situations, I might jam 20-25 bbs preflop. in other situations, I might open jam10-15 bbs preflop. and in others, I might not be able to jam until I have 5 bbs, sometimes more / less, based the action at the table prior to the hand. sometimes I just don't get a chance to get it in until my stack is really short.
I don't base it on how many chips I have, but on the situation itself. I know I should mean more towards jamming when my stack is short, but it might not always be the most profitable play. in some cases, it might be more profitable to raise / call jam than to open jam with 12 bbs.