Are tongue reading variations coming from tongue muscles tightening valid ?

[Frederic Leclair]

I check my tongue every morning as health follow up for myself and practice in deciphering what I am learning in Ann’s Tongue class.

I notice that something that might not be apparent when just pulling tongue out might “appear” as I stick it in and out a few time and sometimes forced or stretch tongue to see more clearly small details. For example:

I noticed that when stretching out tongue more, the tightening of muscles made a hollow part in upper jiao section and showed collapsing kidneys sides at the back with unequal height of sides in lower jiao. These signs are not apparent when I stick my tongue normally without trying to read deeper or see clearer.

Are these observation valid or they are falsified by my efforts to see ?

[Author]

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