29 Years Old. Is It Possible To Increase Height Through Exercise, Stretching Or Diet?
At the end of the long bones in children (the arms and the bones in the lower limb) are epiphyseal cartilage which is turned into bone as the child grows.
At the end of puberty, usually about 17 to 18 , this cartilage is replace by what is called an epiphyseal line, it is basically sealed and no further bone can be added.
Growth hormone can influence the final height of a child because they still have have cartilage at the end of the long bones which can produce bone but it would not affect adults in this way.
This is the reason children who have excess growth hormone may become very tall but adults with excess growth hormone develop a condition called agromegaly,, they do get taller.
In agromegaly, excess growth hormone results in increase soft tissue (increase size of the nose, increase size of the fingers etc)
Exercises such as pilates and yoga can result in stretching and increase in core strength which may improve posture and the illusion of increased height.
The exercises you described will improve fitness and health but will not affect your height.
I hope this helps, feel free to ask any other questions