DVD Fitness 4.0 Lean & Mean To become and stay 'lean', you need to get 'mean' and exercise at a high level of intensity; pushing yourself to new limits. Lean and Mean" fits the bill offering almost 60 minutes of lactic acid producing intervals for advanced fitness enthusiasts. Join Coach Troy as he guides you and an enthusiastic cast of cyclists through a fun and intense workout including a 12 minute 'pyramid' set. You won't believe how fast the time flies by and how fast you'll get 'lean and mean'. Compatible with all stationary bikes Has a 'music on/music off' option allowing you to listen to your own music DVD only Length: 54 Minutes Difficulty level: 8.2.