CBS -- More than 3,500 senior citizens are studying cane fu, where canes are used as weapons for self-defense.
Mike Merino, CEO Of Nifty After Fifty, a fitness chain that developed the class says it's all about one very simple goal, "to actually make a senior feel powerful with something that normally represents frailty."
Berta Maberry, 77, loves the class, "I walk like THIS. So they know it's a weapon."
The class helps seniors learn to prevent falls, which sends more than two million people to the emergency room every year. According to the Centers for Disease Control, only 35% of Americans over 65, are considered physically fit.