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Seratonin - neurotransmitter responsible for happiness.  One can never have enough happiness...  One site called this a   "mom approved tattoo"  ...interesting.

Seratonin - neurotransmitter responsible for happiness. One can never have enough happiness... One site called this a "mom approved tattoo" ...interesting.

"Dopamine is a neurotransmitter involved in pleasure, happiness, mood regulation, learning, and sleep."

"Dopamine is a neurotransmitter involved in pleasure, happiness, mood regulation, learning, and sleep."

Change over time. This tattoo uses mathematical symbols to describe what I study—change over time—as a historian of mathematics. As a bonus, it’s also a pretty good approximation of my life philosophy.

Change over time. This tattoo uses mathematical symbols to describe what I study—change over time—as a historian of mathematics. As a bonus, it’s also a pretty good approximation of my life philosophy.

I love this tat! Simple & Simply stated. I'd also like something in this style on my foot that said "keep going" and the after I will put "13.1, 26.2 etc. Just all tr things I have done

15 Cool Tattoo Ideas for Moms

I love this tat! Simple & Simply stated. I'd also like something in this style on my foot that said "keep going" and the after I will put "13.1, 26.2 etc. Just all tr things I have done

"Nothing happens until something moves" tattoo on the left inner forearm

36 Minimalist tattoos ideas you must see

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