Another OinkBoink thread!
I've been in a few unavoidable physical fights, both in Delhi and in Tamil Nadu! Who said fights dont happen in Tamil Nadu? As someone of average size, average strength and some very basic martial arts training, I can tell you that surviving a fight is all about luck. I've been attacked by people that were smaller than me and by people bigger than me. I got away by keeping calm and trying not to panic. But I couldn't have got away if luck hadn't been on my side.
If you can't run away grab whatever you can, be it a chair, a crowbar, or even youre own watch and use it as a weapon. Always fight dirty, go for the legs, especially the knee and back of the leg. Don't go for the eyes, groin etc. That sounds great in theory but its really hard to hit a small target like that. The idea is to bring the attacker down so you have enough time to run away.
If you're outnumbered just curl into a ball and cover your head. You can recover from almost any physical assault as long as you protect your head. The adrenaline will protect you from immediate pain. If your'e lucky, they will take a breather and leave you enough of a window for you to run away.