TotallyOz Posted August 16, 2007 Posted August 16, 2007 I recently had a VO test. It is the volume of oxygen you body needs to put you in the fat burning zones. In the test, they strap you up to a machine and cover your mouth and you breath only from your mouth into the machine which records all your levels. Your heart beat is also recorded at the same time. It gives you the zones in which you should be working in to burn fat and calories at the optimum level. I learned a great deal about my workout regime and how my body can be more efficient when I exercise. Has anyone else had these tests? Did you find them helpful or interesting at least? Quote