More Days / Less Time vs Less Days / More Time

As long as you're leaving appropriate time/interval for rest between sessions. ie Not doing high intensity sprints 3 days in a row, How many days a week/hours per session should be driven by your goals and your schedule.

With less daylight, I'm doing a bit less lately, but in spring-fall I normally Run every other day, walk the other days, and do some sort of strength program 2-3 days a week on my "walk days" I'm getting closer to the point where my "easy days" will also likely include running. Because of the nature of my strength program, it can also be run every day without hampering progression because it's a gentle smooth curve... I have run it every day in the past, for over a year with no problems.

Ah...fitness. This just depends. More is not always better and one should incorporate appropriate rest and recovery times as part of their overall fitness regimen.

For me, it is variable depending on the time of year. Right now it's winter and it's cold and it's dark so it's pretty much 3x per week lifting in the gym, a couple of days per week on my indoor bike trainer to do some intervals for 30-40 minutes and a good road ride at some point on the weekend when I get a nice afternoon.

I start ramping up my cycling in the Spring when the weather starts to turn nicer and I gear up for the season. When I'm specifically training for an event, I will really ramp up my mileage over about an 8-10 week period depending on my base at that time and then bring the volume back down when said event has passed. During the cycling season I typically only lift 1-2x per week depending on my riding volume.