I took the self defence course thru a company called Safe and Sound. It was truly amazing. You're taught how to avoid problems, how to walk, what to do if someone wants your wallet and how to defend yourself. At 100 lbs soaking wet I was able to get away from the padded attacker after he grabbed me from behind. It was a most exhilirating experience. Your elbow is your most powerful weapon. While I am still extremely careful when walking I have more confidence knowing that I have a plan and am fully prepared to carry it out if someone were to attack me. Please consider a self defence course and an alarm in your home. Stay smart and stay safe!!