crush.

So you have a crush. Falling in love is confusing, scary, funny, and life-changing all at the same time. While many of the physical effects of being in love may be unique to you, scientists have been able to pinpoint neurological and physical explanations for some of the most common symptoms known to the lovesick: racing heartbeats, nervousness, obsessive focus, etc.

1. You get all flustered when you're around them, your heart beats faster and your hands get all clammy.

2. Your thoughts about them border on obsessive.

3. You think they're pretty much perfect.

4. Your cortisol levels go up when you're falling in love.

5. In women, testosterone goes up, but in men it goes down.

6. If you're lucky, they like you too.

7. You can also expect euphoria, sleeplessness, loss of appetite, and a rush of motivation.

8. And you want to make closer relationship.

9. Seeing her face also makes your pupils dilate.

10. Your heart beats faster, too, and more oxygen reaches your brain.

11. The hormone oxytocin can also be triggered.

12. It lower your levels of stress hormone cortisol.

13. Eventually the other hormones that went a little crazy will have returned to normal.