2. All cardio and no strength
The importance of cardio for fat burning is clearly beyond doubt. However, focusing on cardio alone will not only make your training sessions boring, but it will also prevent you from losing calories faster. The reason for this is that strength training has the aim of building muscle, which in turn allows you to boost your metabolic rate and therefore burn more fat. The more muscle you have, the more calories your body uses to keep those muscles going. In addition to that, certain strength-building routines can even burn more calories than cardio, by themselves.