Just started doing HIIT myself on a crosstrainer, don't use the arms just peddle it like a bike.
Really don't know how people claim to do 15-30mins HIIT, at max effort I can do around 5 mins before my legs physically can't peddle anymore, doing 30s on 30s off.
Really don't know how people claim to do 15-30mins HIIT, at max effort I can do around 5 mins before my legs physically can't peddle anymore, doing 30s on 30s off.