Brief Answer:
Supportive care

Detailed Answer:
Thank you for asking

I read your question and i understand your concern. Height of 5 feet 4 inches at age of 21 is good enough and is driven by many factors. Natural height increases up to 20 years of age , after that long bones fuse at their epiphyseal plates and growth stops but small growth of a few inches can still be achieved with good stretching exercises, balanced diet and sleep routine patterns.

Please avoid any cheap publicity stunt to claiming a height boost as those are not true and have many deleterious effect. Just stick to a healthy diet and lifestyle and regular exercise and soem stretching like chin ups and hope for the best.

I hope it helps. Take good care of yourself and dont forget to close the discussion please.

Regards
Khan

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