High-intensity, short workouts will rule in 2014 -- but worry fitness pros

... kinesiology at Georgia State University and lead author of the ACSM report. He's talking about home workout DVDs like P90X or Insanity, or gyms like CrossFit and the rapidly expanding Orangetheory Fitness . Video: Gym focuses on keeping your heart ...

http://www.nbcnews.com/health/high-intensity-short-workouts-will-rule-2014-fitness-pros-predict-2D11585038