Despite an enormous amount of research on
 the topic, there is still some confusion over the relationship of cardiorespiratory training intensity to fat expenditure. This fairly complex physiology has given way to one of the most common weight loss misconceptions: You have to exercise at a low intensity, or you

Source: Myths of Weight Management: You have to exercise at a low intensity to burn fat. – NASM Blog

Myths of Weight Management: You have to exercise at a low intensity to burn fat. – NASM Blog