Question:
Do boys start gaining weight as they approach the middle part of stage 4, or does it happen toward the latter part of stage 4?
Answer:
Because boys start building muscle mass during stage 4, their weight goes up with the increase of their muscles. You should not be gaining weight due to increasing fat. If you are, you are eating too many calories.
This isn’t a particular part of stage 4, but a continuing change that will go into stage 5.