✔ 最佳答案
The human body is the physicality itself. it has its boundary itself, our skin holds such boundary.
identity has no physicality, it could be interpreted as 'one's roles' e.g. daughter, father, friend, student, employer, citizen etc. because it has no physical boundary, sometimes it is not easy to clearly identify someone's role.
If we focus on a person, his/her development...can make their roles changed. for example, a person goes through different stages of roles....while he/she is growing up. daughter - single woman - wife - mother - grandmother - great grandmother...etc. Each time such person's status changes, stress will be in place...while change of identity.
i hope this helps.