Within your Account Settings, you will find your Notification settings. These settings will allow you to choose from Notification Center, Mobile, and Email notifications. You will want to toggle each type on/off depending on how you want to be notified. The Advanced Options will allow you to specify what types of notifications you would like for each type. Please note that email cannot be specified.
If you're a coached athlete, you can edit notifications, such as coach comments, by navigating to the same page. Your Advanced Options will display the relevant settings.