You don't kiss someone by puckering your lips. You see someone and you remember why you desire them. Your sympathetic nervous system quickens your pulse, your frontal lobe lowers your inhibitions, and you need to kiss them. It happens all at once. We're impulsive and compulsive. That's how the brain works.. - Derek Shepherd - Grey's Anatomy
Observation 2: Physical Meredith has a very resilient side to her. She has been through so much to losing many people close to her and having so many near death experiences. But she is able to overcome it and thrive. But she can also have a hardiness side to her as well. She is able to be strong and push through it all and make it seem like she is not even phased at all.