Fitness Trend: Interval training has muscle for 2014

... survey out today. Previous hot trends that didn't make the new top 20 list: Zumba (Latin-inspired dance workouts), Pilates, spinning, kickboxing, barefoot walking and running and stability-ball workouts. The American College of Sports Medicine ...

http://wwws-press.com/apps/pbcs.dll/article?AID=2013131104026