While the neck harness probably has many suspicious uses, it has just as many legitimate ones. Boxers, kickboxers and MMA fighters particularly will benefit from using the harness to develop the strength of their neck. As anyone in the hurting-people business knows, a strong neck is your best defence against concussion and any unwanted knockouts.

Xtreme Monkey's head harness can hold more weight than your neck can manage: The weight is suspended by a spring-loaded clip and the harness itself is fully adjustable, courtesy of a velcro fastening system at the back.