The best fighters I have seen don't talk about tucking the tailbone. They just do what it is that they do and do it well. You can see the natural curve of the lumbar spine. The guys who've taught me to tuck were mostly doing forms with almost no strenuous physical training.

Them there's this question: why must we straighten the natural curve of our cervical spons(neck) and not the low back? I know it makes sense to do so fr visibility and to not expose your neck but keeping the "natural" curve doesn't extend to the neck.


Like I said the best guys just do and they don't talk about manipulating their spines unnaturally.

Well, im no expert. But here is my opinion.

The lumbar spine, is being "pinched" It is in the "middle"

When you have force acting on both sides of a spine, the spine will bend where the forces meet.

The head, and the upper back, (aside from gravity) is not being compressed, and therefore, should not be bent, since it is not "natural"

The bend in the lumbar spine is natural.

A "hunchback" is not natural.

IMO.

Also, IMO, its important not to try and straighten the upper back (area in between the shoulderblades) you can really mess up your back,

Rather, you should try to keep the neck straight.


In the classics, they refer to the spine as a "string of pearls"

a string of pearls, when hung from the topmost point, will naturally straighten.

I can show you some hip stretches, but people always laugh and point when i do them in public...