Well, we all have our problems. I'm not 400 but do feel sorry for people with mobility issues. The thing that bothers me in Walmart, and it's an ever growing trend (no pun intended), is the 30+ year old men/women on the mobile carts. I think they need to NOT make it so easy to be lazy, in many cases, and make them walk more around the store to get that minimal exercise. Yes, Walmart is minimal exercise in the air conditioning - they're not squatting 405 in the store or running for 30 minutes on an incline.
The problem is you still have a chance to not die of a heart attack but they let people in these things who are young and can still do something about their weight!
Sorry, got on a rant ...