Which of the following is a true statement? Energy can be transformed from one form to another
Energy must always be created.
Energy cannot be transformed from one form to another.
Energy that is unused is destroyed.

The first one.

Explanation:

I have no idea how to explain it but it is the first one I did some quick research.

Running is a real challenge, it's not about skill nor being a "natural" at it, it's about discipline. You cant run fast if you're too heave and you cant run far if you have no condition. While I do enjoy going for walks and running the work that must be put in has been challenging, but is that not what makes life enjoyable? After all, achievement is a satisfaction that is earned, not bought.