Are you still Jazzercising or have you hopped onto the newest fitness bandwagon? A worldwide survey conducted by the American College of Sports Medicine (ACSM) concluded the hottest fitness trend of 2014 will be High-Intensity Interval Training, H.I.I.T. This widely popular style of exercise didn't even break the top 20 in last year’s survey before rising to No. 1 this year.
H.I.I.T gets you more fit in less time, makes you smarter, and supercharges your metabolism, but it may not be a smart choice for everyone.