The 5/3/1 workout is a powerlifting program designed by powerlifter Jim Wendler. The key concept is to slowly build strength through four barbell weightlifting exercises: the parallel squat, bench press, deadlift, and the shoulder press, also known as overhead press or military press. The goal of the 5/3/1 workout is to achieve a new one rep max (1RM). The 5/3/1 method is a four-week cycle that requires four workouts per week. Each workout session centers on one core lift: the bench press, squat, deadlift, or shoulder press. The rep scheme is as follows: Week one: For each workout, perform three sets of five reps (three x five) of one lifting exercise. Week two: For each workout, do three sets of three reps (three x three), focusing on one lifting exercise. Week three: For week three, perform one set of five reps, one set of three reps, and one set of one repetition of one lifting exercise. Week four: For this week, the key is deloading. During deload week, you do three x five sets at a lighter weight than the previous week to give your muscles a chance to rest.