Robert,
Welcome to the HealthFrame User Community Forum!
Currently, there is no way to permanently expand the lists that HealthFrame maintains.
We have had a similar request from one of our users to support new
expense types.
I have forwarded your suggestion to our development team and asked that they consider (1) adding 'workout' as a built-in visit type; (2) introducing support for user-added values.
Thanks for your suggestions!
Support Team