Assalamu alaikum.There is research state that human body can still growth,2-3 inch for aldult people through exercise and eating nutrition to increase growth hormone. I have normal height.My question is can i use this technique(exercise and eating) to increase my normal height? Is that regarded as objecting to the decree of Allah? Become taller can make us more strong because we can add more muscle.It also make us more confident with the strong body.Thanks.

All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.

It is permissible for a Muslim to practise physical exercises in order to increase his height, and what you mentioned is not considered as objecting to the Decree and Predestination of Allaah.

Allaah Knows best.