Youth is the next stage after Preadolescence.  Youth is defined as the adolescent years.  This
age group is between 12 and 20 years of age.  Just as we described in the Preadolescence child
stage it is very important for Youth to also first build core strength with the basic exercises
without using weights.   Again these exercises are:

BASIC CORE EXERCISES
Sit ups          Upper ABS - Keep their hands across their chests not behind their neck
Leg lifts         Lower ABS - Lay on back and raise their legs 6 inches off the ground
Push Ups      Have them stay on their knee’s and do push ups
Squats          Have the children squat down and stand up several times for leg strength
Flexibility      Keep your children flexible with stretching exercises
RUN            Have your children outside playing and running to build lung capacity
Once your child can do 20 to 30 sit ups with their hands across their chests (keep the stress of
their necks), when they can do 20 to 30 pushups without having to stay on their knees than
they will have the basic core strength to start on a supervised weightlifting routine.

When a Child between the ages of 12 and 20 starts a weightlifting routine they should
practice and follow the following guidelines:
The child should see a doctor to get permission to start weight training
Children should be supervised by a qualified certified Strength Professional
Warm up and stretching should be done before all resistance training
Exercise environment should be safe and free of hazards
Begin with light loads
Begin with dumbbells before moving up to barbells
Stabilization muscles are important to train and grow at this early age
Perform on average 10 repetitions of a given exercise
Stress proper form on all lifts for safety
Only attend 2 to 3 training sessions a week not to over train and risk injury
Drink plenty of water while you are working out, before and after
Your body is constantly growing at this early age.  Keep in mind that the
average peak age for strength is 26 years old.  So start slow and build
strong muscle with proper form.