I would say this to be true
VO2 Max is the most accuratemeasure of cardio-respiratory fitness. It measures the maximum amount of oxygen that the body can use in one minute per kilogram of body weight (mL/kg/min). During exercise, the heart rate responds by increasing, as does the delivery of oxygen to the body.
Because removing a corn with scissors is a terrible idea anyway. Diabetes or no, you should never remove a corn with scissors. But in her case, it won't heal properly.