Davina McCall has found a new way to keep fit and toned, without it taking over her busy schedule. Fit in15is very simple, just do a combination of Jackie and Marks amazing 15 minute workouts and youll see great results. There are four main Fit in 15 workouts: 1. Cardio 15 30 second bursts of high intensity training alternated with 15 seconds rest periods, sustained for 15 minutes, make this the ultimate fat burner. 2.
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