Video Transcription
You know there's a lot of muscles that affect your back, so let's find out.
You've got great posture.
Yeah.
This may be a sprain.
I'm just feeling a little tender, really.
You know there's a lot of muscles that affect your back, so let's find out.
You've got great posture.
Yeah.
This may be a sprain.
I'm just feeling a little tender, really.