Tricks for loosening too tight hex bolts?

[farrellcollie]

Thanks for all of the input-it was helpful. I had never seen this kind with the hex nut rather than needing a pedal wrench - which I have - I was mystified at first until I found out about the hex thing - then it took awhile to remove the first pedal.(when it finally came loose - I was absurdly proud). The pedal I can't get off is on the right side - so I am also manuevering around other things and cannot get as much leverage (how I lost some flesh). And my hand is rather sore from the hex key. Off to the LBS. I look like I have been through some kind of battle between my hand and several bruises from where I got whacked with the pedals whipping around at me. I have changed pedals on other bikes without this much drama.