Rockwall-Heath ISD placed its High School Head Football Coach, John Harrell, on leave after several parents reported that their children needed medical attention or hospitalization during the team’s offseason training program. WFAA says the students became ill after a strenuous workout that involved more than 300 push-ups over 60 minutes and that the impacted students were diagnosed with rhabdomyolysis or rhabdo. Rhabdo’ is a severe breakdown of muscle tissue that releases a damaging protein into the bloodstream.