Kelli "competitive" Rantz - athlete bio. “I am a Certified Pilates Instructor and Movement Specialist. I admit I am a total movement nerd and gait creeper! I just love teaching movement through mind/body connection and balanced muscle control. I am fascinated by watching random people walk, run, and cycle. Lately (about 14 years), I've been really caught up observing incorrect gait and pedal stroke). I really do drive my family, friends and sisters NUTS!”