HIIT: Gear up, throttle down for bursts of fitness

... fit-looking folks sweating it out on TV commercials. They’re hawking such hard-core workouts as CrossFit and P90X, which are types of high-intensity training. No doubt the popularity of these well-marketed programs shot HIIT to the top of the ...

http://ift.tt/1dn0TXF

HIIT: Gear up, throttle down for bursts of fitness

... impossibly fit-looking folks sweating it out on TV commercials. They're hawking such hard-core workouts as CrossFit and P90X, which are types of high-intensity training. No doubt the popularity of these well-marketed programs shot HIIT to the top of ...

http://ift.tt/1bV8BYb