Rock & Block With Rich Valdes, MS Revitalize your hi/lo classes with challenging new interval choreography. Incorporate traditional self-defense moves into easy-to-teach, 32-count combinations. To access this content, you must purchase OnDemand Monthly Subscription Payment Plan, OnDemand Annual Subscription, OnDemand Monthly Subscription, OnDemand 6-Month Subscription or OnDemand 2 Year Subscription or log in if you are a member.