As Les Mills Head of Research Bryce Hastings explains, LES MILLS GRIT™ is designed to push the heart rate up as high as possible, as often as possible in a 30-minute phase.
“So we design the workout to have these very high spikes of intensity, followed by a complete recovery. And it’s those spikes that generate the types of biochemical changes that are very specific to a HIIT workout.”
We offer LES MILLS GRIT at a number of our facilities, but whilst we are closed why not see what's on offer with a free 60 day trial to LES MILLS On Demand to access your workout anytime, anywere here
This piece originally appeared on lesmills.com.