Human Body – 96 Constituent principles or Tatwas of Siddha Medicine

https://en.wikipedia.org/wiki/Tattva_(Siddha_Medicine)
https://www.youtube.com/results?search_query=96+tattvas

Human has

Chandra Kala- The Prana he inhales in through his left nostril which is of 16 Kalas.
http://fastinginformation.blogspot.com/search/label/Calendar

Surya Kala- The right nostril breath is of Surya kala of 12 kalas.
http://sunmooninformation.blogspot.com/search/label/Aditya

Agni Kala- That runs through the center of the spinal-column which is of 64 kalas.
https://freeglobaluniversity.blogspot.com/search/label/64

Pranava Kala-when the three fires are aroused by the kundalini or cosmic energy and merged as one in the “ Chandra-mandala or Moon’s Sphere that exists above the forehead, Pranava kala is achieved
https://freeglobaluniversity.blogspot.com/search/label/Pran

And four are kalas of star (soul) the fettering tattvas six and ninety two are kalas to count”
https://freeglobaluniversity.blogspot.com/search/label/Four

Agini kala 64 + Surya Kala 12 + Chandra Kala 16 + Star (soul) kala 4= 96 Tattvas

Source
http://forminformation.blogspot.com/search/label/Tirumular