Casey Wright wanted to boost the number of boys in her gymnastics program.
“We then had three gyms with three classes (total) with only 10 boys,” she said. … Originally, it was a way to re-brand and re-market a gymnastics-like program for boys.
So she developed NinjaZone.
“It took off with the popularity of ‘American Ninja Warrior’ and emergence of parkour … Ten boys (in the program) went to 365 kids in six months
(via RecGymnastics.com)
Gymnastics Coaching.com 