Stretching increase height & weightlifting shortens height – Not Really

Basketball players are tall because Only tall people go to basketball Playing basketball does not Make them taller

Our spine does have stretchable or compressible intervertebral discs. It is gravity effect, there is no actual increase or decrease in our height.

Because of Hanging (Stretching) or weightlifting (Compressible) there is sometime fluctuation
in height say (1%) As our growth and height really based on our nutrition.

On our hormones.
Or, on our good nutritional status.
Or our not falling sick
Or not having any major illness.
Or our genetic factors

Also, male hormones in boys influence bone growth

and female hormones in women have effect on the bone growth (especially during
puberty).

Once cartilages ossifies, we just cannot attain any more height.

It is medically not possible.