Take this quick test of your fine motor skills. Let's say you're right-handed. Try using only your left hand to complete an ordinary task – brushing your teeth, forking a salad into your maw, texting or, if you've got some dice-roller in you, shaving.

How's that working out for you, champ?

And to think, you're not even trying to be world class, like Olympic bronze medal-winning long jumper Janay DeLoach, the former Eielson High star who in the last 18 months has undergone a mechanical change as dramatic as it is difficult.

Two surgeries on her left ankle in 2014 forced DeLoach to switch to using her right leg as her take-off leg after a career of left-legged launches. The change also required her to alter her approach run before rocketing herself airborne. She also needed to increase strength in her right leg and complete endless repetitions to become more comfortable jumping off her right leg.