This one is easy! The baby smiles, may coo, and is generally in a good mood.

Physical Clues:
The baby seems happy, relaxed and isn’t showing the other emotions.

What is happening in TSK’s body and brain:
The opposite chemicals from the “fight or flight” chemicals are released.  These include chemicals (also called neurotransmitters) like serotonin.  These help the body feel calm and relaxed.  They let the body do its normal things, like digest food, and make urine.

What to do to help TSK:
Interacting with TSK by smiling and laughing a lot, singing and talking and playing, helps him or her to be in a good state for all these chemicals to let the body do the normal things it needs to do.