Mine are 2 & 3 and are currently rolling all over the floor.
They are hitting and kicking, quite hard and getting pillows to bash each other but laughing.
Every time i 'break them up' they just start again.
Occasionally the little one runs to me to get away but then starts it again.
I sick of shouting 'stop it' at them.
Shall I just let them get on with it?