Be careful with those programs 5x5 or 3-2-1. They can hurt very badly. If you are newbie in the sport even riding a bicycle can improve your 1rm squat. The same is with daily Push ups,they can improve your bench press 1RM. if you a e long in the sport, they can help you to get your new 1RM, but the side effect-recovery can take up to 6 months. You will get injured and you need to know how to recover from it.