This Cardio and Toning Circuit From Katie Austin Requires No Equipment and Only 10 Minutes

By Genevieve Farrell

Get ready to challenge your body with 15 minutes of HIIT cardio 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.