6x1km - good VO2 max session

Got up early and headed out to beat the heat in Paraburdoo. Ran 6x1km with 60-90sec recovery un an undulating course. Real tough session adn something I have not done allot of. The last 90 seconds of each interval was deep into the red zone and I know this is where all the benefit is. Was damn happy to finish. Hopefully the benefits of this training will coem out ina few weeks.