What are Fire Drills?
In short, Fire Drills are the same as the HIIT drills. But Chalene wants to get your attention. You hear the siren on the video, and you know its time to give it all you got. A burst of adrenaline, a surge of energy, and then the HIIT. Fire Drills or HIIT drills last between 30 seconds and a maximum of 1 minute. During a Fire Drill, you go all out! On a scale of 1 – 10, you should be aiming for a 9 or 10. After the drill, you get the same amount of recovery time. The best thing about the HIIT is that you burn the same amount of calories after the workout is over, which Chalene calls the After Burn Effect. This After Burn Effect will help you burn up to 9x the fat than regular cardio.
