For the first time in my life, I've recently started to train myself to run. Having never really run before, I currently divide my 30-minute cardio exercise into intervals of 4-minute walks and 2-minute runs. As challenging as it is, if a trainer were to tell me to course correct in some way, it wouldn't be difficult because only one-third of my time is spent actually running (and even then it's more like a sad jog). However, if I were more advanced in my training, perhaps running the entire 30 minutes and at a faster pace, a course correction would be jarring. I would experience something akin to whiplash having to change direction when I am so confidently and ably headed on my chosen path.