Engage your core and lift both your arms and legs off the ground at the same time, bending at the waist, to form a 'V' shape with your body.
Hold this 'V' position for a few seconds, keeping your arms and legs as straight as possible.
Slowly lower your arms and legs back down to the starting position, ensuring to keep your core engaged and not letting your arms or legs touch the ground before the next repetition.
Repeat this movement for the recommended number of repetitions or for a set time period.