For maximum results in a short span of time, we can’t think of a better way to exercise. The idea is to go at your workout at full speed for about three to four minutes and rest or slow down for half that time, repeating the process about 10 times. This 2:1 method of exercising can be applied to any activity, at any fitness level, and it provides more impressive results than a lengthy session at the gym. One study even reported it can boost fat burning by 36 per cent and improve cardio fitness by 13 per cent! If you’re not one for looking at a stopwatch, pace yourself with music. Go at a moderate rate for most of the song, and really attack the workout when the chorus comes on.