I've never understood some people and their push to exercise through the pain. I know people who keep on going even when they hurt - which is just silly. And then they get to the point where the body is too broken to fix itself. Personally I want to be moving when I'm old - not frozen in place... if I have hereditary arthritis that's one thing - self inflicted is quite another.

you do realize Teresa that this a great example of biased journalism. Did you hear any real studies or statistics in this 3min and 15sec video that supports their claim? Let me guess, your one of those people that love it when you hear anything negative about exercise (high impact or any kind) thus justifying your sedentary lifestyle? Could be wrong, just guessing!

Heather it's never a good idea to assume... I was a runner - was doing up to 5 miles per run, 3-4 days a week, when I developed severe shin splints. I went to the doctor and it was determined that it was not something I could correct without surgery... so I stopped running! What a concept! Unlike most people who plow on until something breaks because "this" is the exercise they want to do!!!

Then I took up tae kwon do and worked my way up to a black belt. After seven years, I hurt my hip doing the high impact kicks required, so I had to stop or face a life of limping around and even having pain driving a car by putting pressure on the gas and brake pedals. Gee - maybe I should've continued...I really did love it.

Then I took up tai chi - which I still practice regularly and have for the past 8 years. I walk between 2 and 6 miles a day with the periodic 8 mile walk (we live out in the country-ish suburbs so it depends on which roads my husband and I take and how many hills we want to climb).

I also take an intermediate pilates classes twice a week (it's all I can afford or I'd be there 3 or 4 times a week). I try to work in at least one time a week of pilates via DVD at home so I can advance rather than just continue in a holding pattern - I only started pilates a little over a year ago when I moved to a new area.

My comment comes from so many people I've met over the years who will continue to do exercise in the face of actual pain. I've known a tremendous number of these people. If something is a physical issue - instead of changing how they exercise, they continue until they end up in the hospital having surgery to correct something they could've prevented or until they simply can't move anymore - literally.

So, I'm very sorry to disappoint you in your quest to see me as a person who sits around eating bon-bons and complaining about all those "exercising people". I do actually move this old carcass about. Whether or not certain exercises "cause" arthritis is debatable. The fact that there are people who will push their bodies beyond physical limits and end up with debilitating injuries leading to things like arthritis - that's an observable fact.