While many gym-goers complain that they might not survive a tough workout, Brian Anderson can speak from experience. For his first CrossFit session, he swung a 44-pound steel ball with a handle over his head and between his legs.
The aim was to do 50 quick repetitions, rest and repeat. After 30 minutes, Mr. Anderson, a 38-year-old member of the special weapons and tactics team in the sheriff’s office in Tacoma, Wash., left the gym with his muscles sapped and back pain so excruciating that he had to lie in the driveway to collect himself.
That night he went to the emergency room, where doctors told him he had rhabdomyolysis, which is caused when muscle fiber breaks down and is released into the bloodstream, poisoning the kidneys. He spent six days in intensive care.
The emphasis is on speed and weight hoisted, not technique. And the importance placed on quantifiable results has attracted hard-charging people like hedge fund managers, former Olympians and scientists.
Source: New York Times