No offense but at that weight you are beyond 'diets' or for that matter any temporary solutions (believe me I know) At that level of obesity only thing that will work is a complete lifestyle change. Sure - there are plenty of ways to lose weight initially (a lot of it in-fact) but it will never last. Usually you will rebound to weight even more that you started-out with damaging your health in the process. Everything is doable with strong-will and dedication but gastric surgery aside that's the only way to bring about long-term weight loss.
Know you have it in you Sheth! Maybe you can force Ret to come with you if he's still working on getting healthy too I knew a State champion Cross Country runner in high school who had a broken foot his senior year, and he still ended up getting 4th at states because he did workouts in water (I guess running in water only works muscles and the heart, and not joints/bones). Maybe try that if you get anxious and wanna over achieve?
Just a small thought - Sprinting isn't the best idea - especially if you're worried about injuries from the past and future. Finding an alternative exercise that is less likely to injure you (and hurt your resolve for your lifestyle change!!) could be something to think about. Something in the pool (doesn't necessarily have to be swimming if you don't like it) if you have access to one is one option!
Sheth you rock and I really hope that you can get healthy (both in your wrist and everything else) so we can get to watching you kick ass at starcraft for a long long time :D
check out the documentary "Hungry for Change" Will help you prosper even more. It really talks a lot about the idea of juicing, which in combination with your already doing will dramatically increase your energy levels and weight loss.
The paleo diet is really sound advice. Really glad to see you working on a good plan like this.
I guess I tend to be pretty picky when I eat (both in terms of 'is it healthy' and 'is it delicious', has to be both! no crap!) a piece of advice I like to give people is "when in doubt, if your grandparents or great grandparents wouldn't recognize it/understand the ingredients in it, you probably don't want to be eating much of it."
Best of luck, enjoying what you eat is really important, and glad that you seem to be
You'r doing the whole walking part alittle wrong, or well its better walking then not walk at all.
You burn fat when your hearth is beating faster, so doing brisk walking for about 20-30 minutes will give you more effect but only if ur hearth beats fast!
Theres no sience losing weight just eat green foods and walk some each day :D!
It's nice to see that you're taking an initiative, and from what I've heard the kind of diet you mention is solid. Eating less fatty meats and fresh produce (while minimizing processed grains/sugars) is a very healthy way to live.
One thing to keep in mind though, is don't go nuts over the organics. I've worked at health food stores and supermarkets for several years and a lot of what you see and hear about "the benefits of organics" is marketing BS. There may be some exceptions here and there (organic meat is usually always better IMO), but nowadays almost anything that CAN be grown organically is sold at a premium just because buyers don't completely understand the difference.