Utförande
Females: Put a 24 inch / 60cm box to the wall and flip so it becomes 20 inches/ 50cm high and 20 inches/ 50cm from the wall.
Males: Put a 20 inch / 50cm box to the wall and flip so it becomes 24 inches/ 60cm high and 24 inches/ 60cm from the wall.
Then walk for 3 minutes side to side. Both hands must be inside the box that the corners of the box forms.