PH3: How To Test Your 1RM
If you haven't tested yourself many times before, here's how to determine your max before starting the PH3 13-week trainer.
Layne Norton's Ph3 program used the Big Three Lifts—squat, bench press, and deadlift—to help you build power and hypertrophy. The numbers you put up through the course of this 13-week program are based on your 1RM max, aka the max amount of weight you could possibly lift for each exercise. Few of us test our 1RM on a regular basis, which is precisely why this calculator exists. Enter the numbers from your most recent to-failure set, and you'll have everything you need to get started on Layne Norton's Ph3 trainer.