Activity pyramid offers guideline to exercise

Tuesday, March 3, 2009 | 5:25 p.m. CST; updated 9:58 p.m. CDT, Tuesday, March 17, 2009

COLUMBIA — How much exercise does it take to lower the risk of early death, cardiovascular disease, Type 2 diabetes, certain kinds of cancer, osteoporosis or stroke? What about to improve mental health, cognitive function, prevent injuries or just maintain a healthy weight?