Welcome to Phase 3! This phase is all about burning fat and uncovering the beautiful muscles you’ve built underneath. This will be the hardest of the phases, and you’ll be working out seven out of 10 days with an optional Challenge Yourself day. You’ll continue with the circuits and the 45/15 intervals, but you’ll use new body part splits and new moves, and you’ll ramp up the explosive elements for optimal fat burning. You can download the schedule here.

Since this phase should be challenging, I’ve added some Tabata training. These intense four-minute workouts will blast fat and create an aft...