How do you change your email address without affecting your groups?

I would like to change my email address so that it doesn't include my full name, but I am a member of several groups. If I change my address, will I have to rejoin each group?How do you change your email address without affecting your groups?For each group. Click Edit Membership at the top of Home page. Email Address

Choose the email address that you would like group messages sent to.

Then click (Add new email address)

Also doesn`t have to be Yahoo email address..