Day 3 of Week 5 is the final workout of the week. The workout has 3 sections. The first 12-minute section consists of 30-second intervals with 10 seconds rest (6 exercises repeated 3 times). Sections 2 consists of 4 exercises repeated 3 times (50 seconds work, 10 seconds rest). The final section is a core-focused finisher with crab walks, leg raises, and other goodies. Equipment required: Heavy dumbbells (Christine uses 20lbs), medium dumbbells (Christine uses 12lbs), and a box for box jumps or do squat jumps instead.