One-repetition maximum

One-repetition maximum (1RM) is the highest amount of weight a person can lift for a specific exercise just once with proper form. It measures maximal strength and is often used by athletes and trainers to assess progress or set training loads. Knowing your 1RM helps tailor workouts to improve strength efficiently. It’s important to perform a 1RM test safely, typically under supervision, because attempting very heavy lifts can increase injury risk if not done correctly. Basically, 1RM represents your strongest effort for a single repetition in a particular movement.