Lie on your back with your hands behind your head and knees bent. Lift your shoulders off the floor and bring your right elbow towards.
Hold a weight or medicine ball in front of you and twist your torso to the right, then to the left, while keeping your core engaged.
Rotate your hips to the right, dipping them towards the floor, then return to the starting position and repeat on the left side.
Lift your hips off the ground, creating a straight line from head to heels. Hold this position for 30-60 seconds, then switch sides.
Twist your torso to the right and raise the weight above your right shoulder, then lower it diagonally across your body towards your left hip. Repeat on the other side.
Lift your legs off the ground a few inches and alternate kicking them up and down in a fluttering motion while engaging your core.
Bend to the right side, bringing your right elbow towards your right hip, then return to the starting position and repeat on the left side.
Using a weighted hula hoop, rotate your hips in a circular motion to keep the hoop spinning around your waist.
Quickly alternate bringing your knees towards your chest in a running motion while keeping your core engaged.
Lift your right knee towards your right elbow while crunching your torso to the side, then return to the starting position and repeat on the left side.