I was wondering what do you guys do for warm ups? I usually jog lightly for about a half mile and stretch for about 20 minutes. This can be pretty time cosuming so I was wondering, is it completely necessary to warm up like this? I know most people don't but I just don't want to pull a muscle or injure myself. Most of the stuff I've read from different sources says you should warm up lightly for 5 minutes, stretch, then do warm up sets etc. Then I read Diesels bulking post and he says no fvcking cardio? I want to bulk but won't that just lead to an injury?