Yes, you can.
To change your email, go to your dashboard and click “view your profile”. Then scroll down to “Change your email”.
Note: You will need your password in order to change your email.
If you are a parent looking to update your email address, your child will need to update it for you, from their user account.
If the parental consent form has not yet been submitted, the child would click the Edit the Email Address link from their dashboard:
If the parental consent form has already been submitted, the child would click the Build Your Team link on the right-hand side of the dashboard, then Parental Consent, and then the Change Your Parent/Guardian's Details button.