I'm just wondering, do you mean static stretches prior to lifting? I usually don't do those until the end, and I don't stretch as hard if I'm lifting (typically stretch harder on cardio days). I figured the half mile was a warmup.
I stretch for a good 10-15 minutes and target every muscle that I will work out.
Some of this just sounds weird to me, like the gallon of milk a day. I realize that whey protein is practically the gold standard for weight gain, but dairy is quite taxing to digest, and I've never heard of anyone drinking that much milk. It may be different for you, but most people would put too much stress on their knees squatting 300 for it to be truly healthy. You can get a good workout with much less weight than that when it comes to the legs. I realize everyone is different. If you were experiencing pain while exercising, you were doing too much at the time. Even working through that can do real damage. It's better to use 0 weight than do something that causes pain while lifting.
Gallon of milk a day (GOMAD) wasn't their suggestion, instead, I just was looking for alternatives to whey protein mixes since they taste awful, and found it. Really easy to do if you are a milkdrinker like I've always been. I can consume as much dairy as I want without problems, some people's digestive systems can handle different things.
As for the squatting, I do it to see improvement. For gaining weight, less reps + more weight is generally more effective. For toning, it's more reps + less weight. I always want to push harder and see improvement. At first my back muscles were very underdeveloped so I took it extremely slow until I eventually had enough to do a basic squat with good form, and the rest is history.
Yep.