Go watch a video of someone doing a sumo dead lift properly. Maybe this one: http://www.youtube.com/watch?v=r--etdWUmc0. You will notice that the dude sets, gets all the tension out of his arms and shoulders, and pulls smoothly off the ground. What you do is grab the bar and jerk upwards. Even your head jerks around. Sure, you might be getting stronger, but like Adam. said, the toll on your joints will catch up with you no matter how "clean" you eat.
My philosophy is to use momentum as required . . . with the joints in my spine, neck, shoulders, ankles, knees, hips, elbows...because that is what occurs during a vertical jump. During a sumo deadlift, you are sumo deadlifting. During this exercise I posted, you are performing a jump and it neeeds to be jerky. THis isn't unconventional wisdom really, but if you want to powerflit, powerlift. If you want to be an athlete you should use as much momentum as possible, unless you want to avoid using the joints that particular day. This day my joints were ready for it. As long as I know when my joints are ready for high impact stuff, and when they need to recover, I should be fine... Your fencing thing is also the result of diet, and it is still curable.
Squats don't work for me - I have mild scoliosis so extra pressure is on my lower back (since my upper back is curved). And deadlifts hit the back too much. THis is essentially a trap bar deadlift. This exercise was inspired by something I've seen form Nick Nillson, who performs weirder exercises that you would thinka re worse for your joints. Anyway, why are you even asking 'why I'm reinventing the wheel?' THe mere fact that your mind is clouded with that thought prevents you from being rational about this. I'm doing something that I think works and feels right for me.
I've followed lyle mcdonald for a while, he's awesome. However Alan aragon tries hard, but clean eating is a complex issue and no one has it down right. I eat fruits, vegetables, nuts, seeds, (including peanuts a legume), seaweeds, and fermented foods. That's clean, pasteurized dairy/chicken and 180 grams of peptide-bonded protein that is difficult tto digest. I haven't read everything form him though so I'll leave the browser open, he has some good stuff but I can't agree with all of it. I eat Raw Food, extremely beneficial, and the science is coming in now. Nutrition science is quite a new field..and there are a lot of questions being answered wrongly and correctly. If you trust what the FDA says, you're not enjoying the best health out there.
What is hilarious is that I had a HUGE debate on milk on mind and muscle forums, a great forum, and how I believe pasteurized milk really does kill your joints. You're not going to find a correct answer through large scale studies, because there are equal amounts showing it improves bone health and that it reduces or has absolutely no benefit to bones/muscle. It's the individual's special situation that determines if whatever food is right..but overall, pasteurized milk and other dairy products are linked to joint problems, and most importantly, are INFLAMMATORY. How do people come to this conclusion when there are so many LARGE studies showing the opposite? Small scale, CASE studies which provide us with a more narrow/specific insight, although there are enormous amounts of scientific data showing milk is not helping bone problems. My problem with large studies is that they disregard so many variables... and that people belive what the study says without questioning what was missing using their own logic.
Stop drinking dairy and your foot or whatever may improve. My friend was a workout buff and got injured all the time, he does not drink dairy anymore and seems to be doing better. It's these individual testimoies I trust more that extremely large studies which are generally easier to interpret than the more detailed specific case studies. Has anyone studied what happens to your joints after high impact loading consuming bee pollen, spirulina, colostrum, velvet deer antler, cacao, hemp seeds.... not yet, but I look forward to when I get the chance.