THOSE ARE INTERNAL...I INSIST THIS POST BE BANNED !!
although I admit to thinking the same....
No, that is not internal, it is inside. The two are COMPLETELY DIFFERENT. It has nothing to do with in yo, fire and water, movement within stillness, or six directions.
I am strictly referring to the physical benefits of a good stretch, something that is found in a variety of Eastern and Western external training methods.
While I have felt IHTBF (It Had to Be Felt), ICDI (I Can't Do It).