Just received the program for my two 14 year olds today. Looking through it and was wondering what weight amount to use. Should they use use a weight they are just comfortable with or should those exercises be a bit challenging?
Start very light for the first four weeks using only enough weight where he can finish every rep with ease. Once Phase 1, Week 5 comes, you can start adding 5 pounds each week as long as he is still able to finish each set.