Is aikido more about competitions and not really focused on real self-defense? And how long does it take to learn enough aikido stuff so that you could defend yourself? Does aikido also offer solutions for ground fighting? Also, how hard is aikido on the body? Are you likely to hurt yourself when you're being thrown over someone's shoulder? Since I'm rather fragile I don't know if I could even withstand such a training. I think aikido looks pretty interesting but I don't know if it's good for self-defense.