Are you excited about starting in your fitness journey? Do you want an all-in-one exercise guide?
Well to be honest, you are in the stage where you will have your maximum growth, both physically and mentally.
I would recommend you to be just active as much as possible throughout the day, I won't recommend gymming at this stage .
I would suggest just playing sports, having plenty of sunlight, and cardio.
I will also suggest some meditation for concentration power.
If you still want some basic guidelines , i would mention these:-