Gunnar Peterson's Core Secrets: Accelerated Core Training.

Core Secrets Accelerated Core Training puts you on the fast track to a strong, lean, sexy body. Using his 1-2-3 Core Technique, Gunnar delivers an intensive workout that will help work and challenge your entire body. Tighten your abs, firm your arms, strengthen your legs - all in a 45-minute session. Gunnar explains proper form and keeps you motivated throughout the workout.