If you are doing, say, zhan zhuang, or whatever physical activity for a long time and you build up some tight spots, it feels good to stretch. But what is happening as you acclimate and relax more? So your body learns to not tense as much? Experts probably need to use less of their conscious mind and motor coordination for some difficult moves (E.g. https://science.slashdot.org/story/14/0 ... n-activity), so their mind/body can stay more relaxed.
How is this relaxation process over time different than stretching? How is it similar or complementary? If I have tight hamstrings, should I be stretching and doing some kind of relaxation process in doing standing? Can I have more flexible hamstrings, or is it just that they won't get as tight once acclimated? So I should still stretch to get more flexible?