Rigorous at-home fitness programs can render results, may pose serious risk

... for Kevin Praska came three years ago, when he lost his breath tying his shoes. That realization prompted him to begin P90X, a rigorous fitness program, which ultimately helped him shed 50 pounds and forge a commitment to leading a healthier ...

http://www.sunherald.com/2013/12/13/5191701/rigorous-at-home-fitness-programs.html#storylink=rss