Up until now, after starting my c25K journey in September last year, I have been running every other day, or at least 3 times a week. I am now significantly much fitter than before and tend to do one evening sprint (as fast as I can for as long as I can, usually about 5k), another a medium run about 50mins to an hour and then a longer run (last one was 14kms in 1hr40).
Should I be looking to run every day or looking to mix it up with some gym classes? I am concerned running every day can't be good on the knees and ankles? Ideas?