This move not only targets the whole body but is a great high intensity blast that burns loads of calories.
Get into plank position on your hands and toes
Keep your back flat, core engaged and bum down
Jump both knees into your chest at the same time
Land lightly on your toes
Jump backwards landing your legs wide
Repeat as quickly and as many as you can in 30 seconds, take a 15 second break and go again.