I learned that when I scream while flexing my muscles, I can become stronger.
On a serious note, watching anime that fits well with your values, in my case slice of life Usagi Drop, made me think about a lot of things. I am pretty sure anime watchers out there feel the same when the watch something or read something that fits well with their values and morals.
tldr Scream while working out at the gym, you'll get the stares + power up.