Chests.  - 

chest tattoo chest tattoo 2 chest tattoo 3

Miso, Miso, Jenny (Luleå)

Thursday Randoms.  - 

thursday random tattoo thursday random tattoo 2 thursday random tattoo 3

sdhl, Andrew Paul, Cole Mohr

Wanderlust.  - 

wanderlust 1 wanderlust 2 wanderlust 3

Cristina, Ruth (Virginia), Whi

Front.  - 

chest tattoo chest tattoo 2 chest tattoo 3

hopeless lovers, Paul Simonon, two

Tattoo Submission: Forster (Park City)  - 

n

Serotonin: a neurotransmitter that, when present, acts as a connector between cells and is associated with feelings of happiness and decreased anxiety.
As someone who has struggled with depression, this particular symbol means everything to me. Its a reminder to stay positive.