Blood drawn from experimental subjects just before they watched the video had 27 percent more beta-endorphins and 87 percent more human growth hormone, compared to blood from the control group, which didn't anticipate the watching of a humorous video.

Habits... the only reason they persist is that they are offering some satisfaction. You allow them to persist by not seeking any other, better form of satisfying the same needs. Every habit, good or bad, is acquired and learned in the same way -- by finding that it is a means of satisfaction.

Just one. But I've watched the video of it about 200 times.

I have an older brother and older sister. My older sister is the girliest girl on the planet, so I just hated everything about that. I did anything my brother did. He actually got me into wrestling. I watched it because he did, and I played video games because he did.

Discover your many passions by watching videos that inspire you.

I had to decide that I was going to give him 100 percent. Every time we'd argue, I'd say, 'This isn't working out.' I had to commit. Everything changed once I made that mental decision.