Historically I do commute everywhere but recently I have been super sick. Likely stemming from a nasty sinus infection that I am after several weeks I'm just starting to fully kick. I am a bit apprehensive to ride in the cold right now til I feel 100% normal. This was why I was wanting to do indoor workouts for a while. With the load of work I have right now I cannot risk getting sick. I have been doing some intervals on my trainer. My main goal is not to lose the fitness I already have.