HIIT (High Intensity Interval Training)

Workout Bristol Blog:

'HIIT itself involves alternating bouts of both high and low intensity exercise to increase the amount of high intensity work performed. The low intensity, or rest periods, allow for buffering and clearing of lactic acid from the blood which then allows the individual to perform another bout of high intensity work'

Workout Bristol's Kate Slee & Mark Wood from Origin Series take an in-depth look at HIIT training and its effectiveness.