You are not this body but a soul covered in a material body. The body is just a machine that you use as a tool to do things Lord Krishna, Bhagavad Gita

Reincarnation is the transmigration of soul from one body to another. At the time of death, we (The Soul) leave one body and enter a new one.

The mysteries of the universe are vast and endless, from the
nature

Understanding that the real purpose of life is to free oneself from the cycle of reincarnation, King Bharata journeyed to a sacred place of pilgrimage called Pulaha-asrama, in the foothills of the Himalayas.