Building muscle and burning fat are the keys to a strong, fit, and healthy body. But who wants to spend hours at the gym lifting weights? For a faster, more efficient approach, this program uses a circuit-training format and multi-joint movements that work several muscle groups simultaneously. The mix of strength training and cardio will give you long, lean muscle tone and boost your metabolism, helping you lose weight more quickly and easily. Celebrated Hollywood personal trainer Erin O’Brien welcomes you into her home for this no-nonsense, practical workout that's totally results driven. Five dynamic segments allow you to mix and match or do the full workout for a heart-pumping, total-body challenge. With her infectious enthusiasm and energy (Chicago Tribune), Erin will get you fit and strong in no time! Equipment needed: light hand weights.