Warm up for 5-10 minutes, then perform two or three sets of this circuit straight through (one to two minutes rest after each circuit).
30 seconds Mountain climbers
30 seconds Bicycle crunches
30 seconds Burpees
30 seconds Squats
30 seconds Jumping jacks
30 seconds Crunches
30 seconds Squat jumps
30 seconds High knees
30 seconds Press ups
30 seconds Russian twist
Finish with two minutes of Star jumps, then cool down.