Going to the gym is meant to improve your health - but it's increasingly leaving gym bunnies with bumps and bruises and strains.
In the past year ACC has approved more than 57,000 gym injury claims- costing the country $35 million in treatment. More than half of the claims were from lifting, carrying or straining.
ACC had approved 57,302 claims from people who said they had been injured while working out as at December 3 2016, more than twice as many as in 2011, figures released to the Herald under the Official Information Act revealed.
The total bill for rehabilitation for gym injuries nearly quadrupled, surging from just over $9 million in 2011 to $35.4 million in 2016.
ACC senior sport injury prevention specialist John Lammas said staff were analysing the factors contributing to the rise in gym injuries.
"ACC supports people leading healthy active lifestyles and will consider opportunities to reduce the incidence and severity of injury where possible."