我是二十岁的年龄,40岁的身体 用英语怎么说

问题描述:

我是二十岁的年龄,40岁的身体 用英语怎么说

my body is twice older than my age.

I get a 20 year-old age,but a 40 year-old body.
或者
I'am 20 years old with a body 40 years old.