What to read or study next for physical tells.

[Sounded Simple]

Hi,

I have just finished re-reading these three titles
- Caros Book of Tells
- Readem and Reap
- Definitive Book of Body Language (Allen & Pease)

To anyone who hasnt read the above books I would recommend them.

This reading has certainly been a big help to my live game by being able to spot a tell or two per session.
I have also noticed body language away from the table that has helped me with negotiations and business.


I would like to know what you guys recommend studying next?
Id like to syudy the subject in depth and it doesnt have to be specific to poker.