Endurance athletes sometimes say they're "addicted" to exercise. In fact, scientists have shown that rhythmic, continuous exercise — aerobic exercise — can in fact produce narcoticlike chemicals in the body.
Now researchers suggest that those chemicals may have helped turn humans, as well as other animals, into long-distance runners.
The man behind the research is University of Arizona anthropologist David Raichlen, a runner himself. He does about 25 miles a week.
When it comes to walking, the easy part is understanding the benefits: Regular, brisk walks can strengthen our bones, help control blood sugar, help lower blood pressure and cholesterol, and the list goes on. The hard part is finding the time to fit it in.
Engineering physical activity back into Americans' daily lives is the goal of an educational campaign launched by Kaiser Permanente,an Oakland, Calif.-based health plan.
Two brothers have been charged in connection with one of the nation's largest drug heists, along with 20 other people in an organized crime ring that stretched from Florida to New Jersey and Connecticut.
It's the culmination of a three-year FBI investigation in which undercover agents managed to prevent any of the stolen drugs from entering the marketplace, the Associated Press reported yesterday.
Moms and their kids protest a proposed ban on homemade food at bake sales in New York City schools at a rally near City Hall in 2010. One sign read, "I wanna get obese on my terms. No junk food."
Credit edenpictures / Flickr
An American tradition is in jeopardy.
The bake sale, a staple of school fundraising for generations, is getting squeezed. The epidemic of childhood obesity is leading some districts to restrict the kinds of foods sold or to ban the sales altogether, Bloomberg Businessweek's Stephanie Armour explained on Friday's Morning Edition.