A skinny Boxer in his late fifties still fights in the life-ring

What's that heavy burden lies on his troubled head?
The featherweight innocent; How long does he carries that much?
Dear Champion brother! Relax yourself and please do not punch him harder,
As his fragile skeleton would be scattered.

* Once I dreamed to be a Boxer,
But the mysterious hand pushed me to be a constant Runner.

A humble dedication to my sick friend Jerry for his immediate recovery.