The chances are you’ve heard of HIIT—the work-rest-repeat form of cardio workout that had everyone doing burpees in their bedrooms during the pandemic. But you might not be so familiar with its heavyweight cousin, HIRT.
HIRT stands for high-intensity resistance training, which takes the format of HIIT workouts and adds muscle-building moves. This results in sessions that are capable of boosting your aerobic capacity, improving your strength, building muscular endurance and packing on mass, usually in the space of 30 minutes or less.
