I'm going to tell you a story:
Once upon a time there was this girl named Robin. Robin hated running more than anything in the world. Really though. Her top five list of things she hates goes like this: Mushrooms, running, homework, winter, terrorists. Every once in a while she would attempt to be athletic and physically fit and go for a run. She would run for 45 seconds, and walk for 3 minutes, run for 120 seconds, walk for 4 minutes, and then get bored and tired and would take a shortcut home. This would happen 3-6 times a year.
Soon Robin came to college and gained every single pound of the freshman fifteen. So she tried to start exercising again. Lucky for Robin she had a superstar roommat named Lilly who would go running with her and make her run for 5 minutes and walk for 45 seconds, etc. Lilly also wouldn't let her take the shortcut home. Everything was going so well, but Lilly goes to a hard college and cares about good grades and she wasn't able to go running with Robin because she had to be responsible. So Robin tries to keep running, but she realizes more and more that she doesn't just dislike running, she really hates it, the high one gets after a good run couldn't compensate for all the anger she felt while running.
One day Robin is feeling like a fattie, probably because she watched three consecutive hours of Friends and ate a whole box of Chips Ahoy cookies (three hours is probably an exaggeration and it most likely wasn't a whole package of cookies) so she made herself get off the couch and go for a run. This time something was different though. She ran for two miles without stopping and felt great. She even wanted to keep going. So she went for three and a half miles and would have kept going, but it was getting dark so she went home. Robin has been running in this fashion for two weeks. She doesn't know what’s changed, but all of a sudden running is one of her voluntary hobbies that she doesn't hate and actually kind of likes.
It's going to forever remain a mystery of what switch was flipped in Robin's brain that made it so she likes to run around the block for fun, but whatever it was, she appreciates it.
Wasn't that a great story?