DC1 is nearly five. He is quite large big for his age, over 20 kg. He is usually full of beans, and can be quite boisterous. I seem to spend quite a lot of time reminding him not to be rough. He's not vicious though, IYSWIM. School aren't worried, but I have no idea whether within his school group he is the one of the rougher ones.
How much of this is normal for age? Is this just a testosterone surge? In hindsight I have worried about or tried to amend otherwise normal for age behaviour previously. If it's a phase they grow out of I am happy to continue with reminding, and chastising (with consequences if he doesn't stop when told.
TIA?