The Fat Burn protocol with 8/12 intervals is the one that has been proven to lose 9 times more fat than traditional aerobic exercise. Everything we have is evidence based.
The trick here is the resistance. It has to be personalised and it has to be progressive because as you get fitter the rides should get more challenging. The Fat Burn is linked to the Intense protocol so that whatever the latest resistance on on the Intense, the Fat Burn is using the same. On our YouTube channel of ours, you can see how best to use the Fat Burn properly. If you do it 3 times a week, or 4 times a week, you will see great results.