SET TIMER UP TO 40 MINUTES.
PAY ATTENTION TO ALL METRICS, ESPECIALLY THE WORK;REST RATIO. IF YOU NEED MORE TIME RECOVER AND THEREFORE DROP THE HEART RATE, PLEASE EXTEND THE REST.
HIIT is a training/section consisting of repeated bouts of high-intensity above the lactate threshold, critical speed/power, MLSS (or a rating of perceived exertion of hard or greater) interspersed by periods of low-intensity exercise or complete rest
Physiological targets of HIIT include:
* Enhancement of the cardiorespiratory system
* Greater muscle oxygen delivery and utilization
* Aerobic and anaerobic metabolism
* Neuromuscular efficiency
NOTE: Control the rest time as per your readiness and HR tracking. Your HR should drop as low as possible after every exercise.