Some interesting NPR stories:
Going Inside The World Of ‘Crossfit’
We go inside the District’s latest exercise craze to see whether it’s just another fad, or the holy grail of fitness.
Sizing Up Americans In ‘The Weight Of The Nation’
A new four-part documentary airing on HBO next week looks at America’s growing weight problem. John Hoffman, vice president of HBO Documentary Films and executive producer of The Weight Of The Nation, describes his three year-project to document the causes and effects of being overweight and obese in America.
Reporting in Cell Metabolism, researchers write that when people who lead relatively sedentary lives worked out the DNA in their muscle fibers changed almost immediately. Scientists also found caffeine had the same effect on isolated rodent muscles. Study co-author Juleen Zierath discusses the DNA modifications.
Read More NPR stories on Health and Fitness