Sometimes you have to train slower to go faster. This fitness video – part of Troy Jacobson’s SPINeRVALS Aero Base Builder series – is a fun, low intensity interval training routine that will train your muscles to use fat more effectively. This is what Troy calls ‘a blue zone workout’ - intense enough to increase heart rate yet not so strenuous that it becomes an anaerobic workout. Delivered straight to your PC, TV or iPod this is an essential part of any off-season program.