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.
First, Max Reps in 6 Rounds of: 30 second Left-Arm Kettlebell Swings (16/12 kg) 30 second Right-Arm Kettlebell Swings (16/12 kg) 30 second Left-Arm Kettlebell Snatches (16/12 kg) 30 second Right-Arm Kettlebell Snatches (16/12 kg) 30 second Left-Arm Kettlebell Overhead Reverse Lunges (16/12 kg) 30 second Right-Arm Kettlebell Overhead Reverse Lunges (16/12 kg)