A former Navy information systems technician is suing a Manassas gym over an exercise program that he says left him permanently disabled.

Makimba Mimms, of Bristow, says the CrossFit workout he did in 2005 caused him to urinate blood and his legs to swell.

The 29-year-old was hospitalized and says he now has limited ability to stand for long periods, run and play sports.

Mimms is suing Manassas World Gym, where he did the workout; Ruthless Training Concepts, a CrossFit affiliate at the time; and one of Ruthless's employees, who administered the workout.

The controversial workout method involves timed, high-intensity strength training with little or no rest or water between sets.

An attorney for the gym says Mimms should have stopped if he needed to.