Load a barbell with 60% of your deadlift 1RM and set a timer for 12 minutes.

Perform as many single reps as possible in 12 minutes, shooting for a minimum of 20 reps.

Each rep should be performed with maximal speed from the floor.

Release the bar completely between reps; rest until you're ready, and repeat.

Once 12 minutes are up, retrieve that lung you expelled around minute 9 and record your score.