you should deal with it as you like ...

but don't worry about his muscles... humans are not physically strong, that is why we have invented so many weapons...Its not that difficult to disable man in a fight... never fight with bare hands... always pick up something which can be used as weapon..

in normal life if you pick up a chair and bring it down on his head,he most probably wont survive... and eyes are like most delicate part of humans or animals... even normal fingers can do enough damage there... you could survive against even leopard if you know how to fight... don't underestimate your strength!!!!