For me, it was in like 2nd grade when I joined my MA group. I was a really short and small kid. My parents wanted me to be able to defend myself and to get involved in something, so it was both MA and Cub Scouts. Gradually, I watched The Karate Kid, Power Rangers, and related things and I put forth more effort in my training. Then, about 4 years ago, my MA group also added Chinese Wushu to their repertoire and unfortunately, due to a scout campout in Canada, I was unable to attend the first camp. But since I started Wushu the year after, I have been more dedicated to Wushu (too much for my dad's taste, cuz he wants me to get Eagle Scout before I'm 18) and I've never regretted it for a minute. EDIT: the red smiley is supposed to be "18"