Here's the formula. Natural.
Just after I wrote my last snippet, I went for a run. I left at around 7:20. Did about 9.5 kms in 55 mins. Here's the result. And I'm not kidding. :)
You see the drastic change in skin color right above the ankle? Now, this isn't exaggeration. I hadn't gone running in the morning for quite a few days and therefore, this didn't exist beforehand.
Anyway, it was joy.