Police officers must participate in manual labor daily, requiring the utmost physical health. But few maintain a healthy fitness level, leaving them at risk of injury. According to Brian Sharkey, co-author of Working Hard (Human Kinetics, February 2008) individuals whose occupation involves physical labor can greatly decrease their chances of getting hurt on the job by maintaining a lifelong fitness program.
Police officers and firefighters undergo extensive physical training to get on a department, but few are required to maintain a fitness program after being hired, leaving them out of shape and at risk of getting hurt on the job. One study on service workers showed the body fat levels of emergency service personnel doubled and fitness declined during their 20-year careers.

