Spinning for 30 minutes? You could do that! Weight lifting, 30 minutes? You can do that! Yoga for 30 minutes, you can do that! Studies have shown the benefits of an intense workout that focuses on a singular activity can often peak after 30 minutes, and switching to a different activity for the next 20-30 minutes will maximize results. TotalFusion uses the revolutionary Spivi system which tracks your performance data in real-time and delivers an exciting workout experience.