生命是如此的短暂,所以不要把时间都浪费在讨厌一个人身上, Why say 身上?
I understand this sentence 生命是如此的短暂,所以不要把时间都浪费在讨厌一个人身上, but not why they have used 身上 at the end. The sentence sounded complete to me without 身上, but maybe I'm wrong.
Why is it on the end there, what does adding this mean for the sentence?