Engaging your core by balancing in a plank position helps to strengthen and tone.
Get into a high plank position and alternate bringing each knee up towards your chest in a fast motion.
Stand with feet hip-width apart and jog in place, focusing on pulling your knees up high to get your ab muscles working hard with every step.
Then immediately jump both feet back in towards your chest in a squat before standing back up tall.
Rotate torso from side to side lowering weight towards the ground each way. Repeat for 10-15 reps on each side.
From a plank pose, jump feet out wide and back in close while keeping body in a straight line.
Lie face up and pull one elbow across body to opposite knee then alternate sides in a bicycle pedal motion while keeping shoulders lifted.