Start by lying on the back - arms relaxed at each side - push shoulders into the mat - roll the skates back towards the body bending at the knees and lift the hips from the floor - engage core - roll both skates away from the body - start rolling on four wheels, as the legs extend outwards flex both feet raising the front wheels off the floor and continue on two - reverse the movement, roll the legs back towards the body bending the knees - start on two wheels and end on all four - skates hip distance and roll parallel with each other - keep the hips square and raised throughout - repeat action.