A. Serotonin: Normally connected with temper regulation and thoughts of properly-getting, serotonin plays an important function in modulating thoughts like happiness and contentment. Quick Consider: This can be Piaget at its best. As I wrote within our GPHG preview, this felt such as the apparent standout on the group – https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/