If you do the program as written, and you are a novice male between the ages of 18 and 35, the first five or six squat workouts will see the work sets going up 10 pounds every time. If your first day is 135 x 5 x 3 sets across, then 185 x 5 x 3 will be the sixth workout. (We’ll use the squat as our example exercise for this program, and if you’ve read the books you know that the other movements go up at different rates but that the squat is a good proxy for general progress on the program.) I have yet to see someone in that demographic who is eating and resting correctly that is not able to do this.
Eating correctly may mean 6000 calories/day with a gallon of whole milk, or it may mean 3500 calories/day on a paleo-type lower carb no-dairy diet, depending on your initial body composition. If this or its equivalent did not happen, you’re not doing the program.