The last variation is the skydive plank, which is a little less demanding. Isaac explained: “While lying on your stomach with your hands next to your temples, start raising your chest and your quads off the floor as high as you can and hold for a couple of seconds, before lowering them down again.”

Women should aim for multiple sets of 10 to 30 seconds but Kate may do 10 sets of 45-second planks for each variation approximately.

Running is also a great way to start the day and it burns 11.4 calories per minute.

The Princess of Wales loves running, but if slimmers are not a fan they can try similar cardio exercises such as cycling, swimming, skipping, or even just walking.

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Source: Daily Express | Diet