https://briannox.com/ for more tips and in-depth videos.
Getting my book for free on audible when you start a trial?
https://www.audible.com/pd/B01MD2BISH...

https://amzn.to/2Fnf2xD to find all my books on Amazon.com


References to the studies:

https://doi.org/10.1523/JNEUROSCI.275... (Oxytocin Modulates Social Distance between Males and Females)

https://www.ncbi.nlm.nih.gov/pubmed/1... (Oxytocin increases trust in humans.)

https://www.ncbi.nlm.nih.gov/pmc/arti... (Could intranasal oxytocin be used to enhance relationships?)