It’s hard to curl in a ball
With no struggle, no shock
It's child’s play, that’s all
Knock, knock, knock
Roll back and over it
Roll forward and rock
Tense muscles knit
Knock, knock, knock
Ease out the pain
Open up and unlock
Aches I can explain
Knock, knock, knock
The weight of years
Anchors like a rock
Limbs, immovable peirs
Knock, knock, knock