The testosterone kick seems to really take a hold between 6 and 8. The sudden pent up energy comes surging out and these boys really want to run hard, jump high and play fight/wrestle/rag whatever you choose to call it with their fathers or bigger boy cousins or friends.
Suddenly that sweet, little 3-5 year old is gone in a whirlwind of exciting energy. From six the boys appetite seems to have surged and the consumption of eggs, toast, cereal, pasta shoots up and it almost feels like you can see them growing.
But they are still just little boys. The boundaries are being tested all the time, later beds, more grown up films, sleep overs, cooler clothes. But they still need their parents and more than ever their fathers to help steer them along this first roller coaster of hormones.