My niche is running - I've been doing it for over 30 years! Currently I am saying that "I want to help runners begin a running program and help them to stay runners for life". I want to help beginning runners and also runners that have been running for awhile and want to keep on running. Should I narrow my focus to only beginners? Helping them to their first races, nutrition, etc.? However, this is also information that mature runners may be able to use, also.
Any input is welcome!