Remember too some “guy” advice is not really fit for girls and visa-versa.As an example Kiefer talks a lot about how guys can easily burn through their glycogen stores during a workout but women will try to preserve glycogen and tend to burn fatty acids during a workout. Consequently, men will burn fat for the next 24 hours or so while women burn fat mostly DURING their workouts. For this reason a woman may want to do some HIIT after a workout if fat loss is their main goal.