Users are asked to share their location with Tinder so the app can recommend people within a certain distance. To make that feature work, Tinder has to record the last known location of each user.
Serotonin is known to be the most responsible in terms of neurotransmitters and depression. Serotonin is responsible for an array of functions most importantly being the mood and perception of a person.
By Dr. Becker Serotonin is a neurotransmitter produced by the body that plays a role in regulating behavior, awareness of pain, appetite, movement, body temperature, and function of the heart and lungs. Too little serotonin in the brain is thought to play a role in depression.