Hey guys, what do you think of the following HIIT workout? At my university's gym, there is an indoor track, in which 8 laps equals 1 mile. For my workout, I alternate between sprinting a lap and walking a lap for 20-25 minutes. Do you think that is sufficient? Or does that allow for too much rest time? I got a good workout, so I'm just wondering if there's a more efficient way.