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.
Partner B while the other Run: Max Ruck Squats (30/20 lb) Max Ruck Plank Hold (30/20 lb) Max Ruck Lunges (30/20 lb) Max Flutter Kicks
Finally, perform: 1 mile Ruck Run (30/20 lb, together)
While Partner A runs 400 meters, Partner B will perform max repetitions of the specified movement per station. Once the Run is completed, athletes will switch and move to the next station.