All your details, planned sessions, recorded training, etc..., basically anything you add to the site, are kept secure and will not be passed on to any 3rd party.
We do not share any of your data anonymously or not, with anyone.
Your email address will only be used to contact you with relevant information about the site and in certain functionality of the site such as password recovery.
NB. In the Notifications section you can selectively disable all communications from the site.