Originally Posted by
Wesley36
Anybody ever try using Billat 30-30 intervals (30 s at VO2max, 30 s 50% of VO2max, to exhaustion)? Sounds like a good way to dole out suffering.
(the article is for runners, but the same general principles apply)
http://www.pponline.co.uk/encyc/inte...our-vo2max-471
Yes. I call them "dirty thirties". They suck.