Money to be made here

Fast and furious: intensity is the key to health and fitness

From the above article, worth reading in full:

Low-volume maximal HIIT sessions may provide a compromise between the previous two protocols.

This strategy involves eight to ten one-minute bouts performed at maximal aerobic exercise capacity, interspersed with 60-75 seconds of light recovery, therefore offering significant time advantages, with a single session taking around 20 minutes.

Therefore its lower intensity (compared to supra-maximal HIIT) and shorter session duration (compared to aerobic HIIT) may make it suitable for sedentary or obese people, and those with existing metabolic conditions.

This form of HIIT has already been trialled successfully in type 2 diabetes patients, who demonstrated markedly improved blood-sugar control in just two weeks.

How low can you go?

We still don’t really know the minimum amount of exercise required to induce significant health and fitness benefits. But a recent study has cut down the exercise time even further, showing that just six ten-second all-out sprints, spread throughout a week can improve aerobic fitness and blood-sugar control.

Much of this sounds too good (at least for those of us who find exercising a bore) to be true.  Someone will write a book about this and make a lot of money.