The lung is a pretty simple movement that you've certainly carried out countless times before, but there are a few significant subtleties that you can consider in order to shield yourself from knee injuries further down the track.
400 meter Run 25 Kettlebell Swings (55/35 lb) 200 meter Farmers Walk (55,40/35,30 lb) 200 meter Waiters Walk (40/30 lb) 25 Box Jumps (24/20 in) 100 meter Sprint 100 meter Walking Lunges 100 meter Sprint 100 meter Walking Lunges 5 Burpees 400 meter Medicine Ball Run (20/14 lb)