Jo, Karolina and Alyssa whipped out 4.8 kms, 150 rows, 300 pushups and 450 squats and squeaked in about 20 seconds ahead of Matt, Kathryn, Marie and Kelly.
This is who the workout is named for. Lt. Michael Murphy died in Afghanistan in 2005. He used to do this workout wearing about 10kgs of body armour!!