As much as I loooove to run outside having babies at home doesn't alway allow me to explore the great outdoors. HOWEVER.... this treadmill-floor circuit doesn't disappoint.... If you're looking to build both endurance and speed these combination interval workouts are the way to go. It's time for some you time. With the babies asleep and music jamming you too can CRUSH this circuit... check out this full body HIIT treadmill floor flip-flop workout for a solid full body burn!
(don't be scared to sprint when you can)