You Only Need 15 Minutes For This Efficient HIIT Workout From Katie Austin

Get ready to challenge your body with 15 minutes of cardio HIIT from Katie Austin! This session is ideal for when you're recovered and ready to push past your limits. Throughout this quick workout, Katie will be tracking her strain, heart rate, and calories burned using her WHOOP. This real-time feedback will allow Katie to work out at her most efficient and effective.