File :-(, x, )
Anonymous
Does sprinting/HIIT help define build or add strength or your leg muscles?
>> Anonymous
I would recommend just regular running, rather than sprinting. You will get a better workout because you will last longer.
>> Anonymous
sprinting and HIIT are very different.

Sprinting is anaerobic, whereas HIIT is aerobic. If you want to add strength/size to your legs, sprinting would be more beneficial than HIIT.
>> Anonymous
The reason why HIIT works the way it does is it breaks down muscles like lifting does. HIIT is anaerobic as well. If you can manage HIIT while doing a squat at the same time, you'll get twice the benefit. Don't squat more than what you can balance or you might tip over.
>> Anonymous
     File :-(, x)
SQUAIITZ