One, two, three, four, I repeat for you once more

One, two, three, four,
I repeat for you once more:

Five, six, seven, eight,
I am starting, starting fight!

Nine, ten, eleven, twelve,
Save, save, save your health!

Thirteen, fourteen, fifteen, sixteen,
It doesn’t matter that I’m thin!

Seventeen, eighteen, nineteen, twenty,
But of power I’m plenty!