after many years of going to chiropractors (a total of 7 in 4 different clinics) every 4-6 weeks for 15 years, (and dropping thousands of dollars in the process), i was told by a chiropractor here in quebec that most lower back problems are caused by weak stomach muscles. this was later confirmed by reading some articles in muscle and fitness websites. since i started doing my "bicycle" sit-ups i have gone to a chiropractor twice in 4 years, and one of those times was just because i thot that the condition of my back was too good to be true and wanted it checked. as my stomach has gained strength i have fewer and fewer problems and i can even do things that i couldnt have ever done years ago - lay tile, dig in my garden, work on plumbing below grade sitting on the ground.
in addition, my neck has had no problems since i started doing "windmills". in short most back problems are caused by muscle imbalances. it is a shame that more people dont know this, but now YOU do.
jon
Astronomy says that we will find a coded signal from outer space. Then we'll KNOW that life exists, for coded signals aren't by chance.
Biology says that there are coded genetic signals in every cell, but we KNOW that no intelligence created life.