Run-Walk tables

Inspired by Fellrnr's run-walk tables, I have created a run-walk table generator with a few more ratios and the ability to show both metric and imperial measurements.

Run-walk is a technique in marathon/ultramarathon running to prolong muscle endurance by allowing them to recover for a short period of time. It allows the heart rate to decrease and gives the opportunity to eat without being out of breath.

Run:Walk ratio: Imperial: