Last time I was near a body of water I could, but that was a decade ago, not sure now.
The question "can you swim" is more adequately explained as "would you drown if you fell into a body of water".
Its pretty the much only physical activity im good at
I'm not too sure. I used to be good at it when I was a kid, but the last time I tried I was so unfit that my coordination was terrible and that was already a few years ago. I'd probably get a cramp and drown after 100m if I tried today.
As Yuno would say I sink like a saw, So nope