All the websites shown bellow are the sites I gathered my information from.
http://www.study-body-language.com/
https://www.lifespan.com/7-reasons-memory-bad/ (I only mentioned a select few so if you would like, you could visit this site to find the other ones.)
I would recommend to visit the site below because it may reveal more than you would think...
https://www.littlethings.com/sitting-positions-personality-test/7
I don't know about the test though, I did not take it I just looked at the sitting positions and what it said about you.
http://www.straightdope.com/columns/read/619/why-do-we-nod-our-heads-for-yes-and-shake-them-for-no/