When I do start to grow, how will it be? Will I be sore, tired, or it will just happen?
Your growth will gear up so gradually that you would hardly notice if it wasn't for the fact that you will constantly be needing longer or larger clothing every few months. Some guys find their knees getting sore and it that happens, just back off on your activity a bit for a while. Also find that you will want to sleep later in the morning. The better way to handle that is going to bed earlier, but most teens hate the thought of that. You will also find yourself a bit more clumsy at times as you are constantly trying to adapt to a bigger body. All these things don't happen suddenly or at the same time. Then as your growth slows back down, they will fade away.