The feeling of a good workout session or practice.
The feelin of winning a championship or coming first place in an event or tournament. I'm talking about sports but anything else applies too.
The feeling of getting that number from a girl you took 30 mins of mentally preparing to ask. The feeling of getting to know her and finding out you really like her personality as well as looks.
The feeling of having a great "work out session" with a significant other ( not talking about lifting weights lol) with nobody home. You don't have to rush and can have multiple sessions.
The feeling of enjoying a meal, or movies or just hangig out with a group of close friends.
The feeling of getting an A on a test/quiz that you didn't study for. Or cheated on and didn't get caught.
The feeling of a new naruto chapter, episode or even video game coming out.
The feeling of believing in a higher being and having a purpose or calling in life.
The feeling of listening to music or better yet making your own music. Or much better jamming with your friends!
The feeling of just eating your favorite food or dessert and being full