You mean other than getting out of bed in the morning? Hmm… 
I never follow my own advice that I give here… Well the principals I do but the details are different.
Like many people here, my situation is complex. But it’s a long story that started with my wife having preemie twins when I was an aspiring ultra-runner at 48. That reality was crushed but my kids are so incredibly fun that I would not trade them for anything. We spent the first 3 years trying to survive… Since then I mostly have done just enough to feel in a little bit of shape but never to that level of being super motivated/fit.
Anyway fast forward to now (at 58) and I have to do everything I can to try to stay consistent so I do exactly what I feel like just to drive inspiration/fun/motivation. I care much more about health than cycling performance, so the race is more just a goal to help drive motivation (and it’s fun).
Now that that my kids are 10, TrainerDay is going well, I don’t have another job… My life seems to be coming together and I finally got totally motivated for the first time in last 10 years towards the end of the summer and built up to a 100km ride after like 8 weeks (a bit on the steep volume increase side)… Then as the weather got worse, I struggled, but I did a little something each week even as winter approached.
I have a nice (but cold) gym at home, but I just joined a warm gym again and seriously excited about it.
So just like the advice I was alluding to above, I am 100% focused on improving my work capacity as I find when you get older it’s very easy
to dig yourself into a hole. It’s funny as the last 2 summers I have dug like 500 wheel barrows of dirt for my kids pump track for biking and other projects. 4-6 hours a day of digging seemed to do wonders for my work capacity but my inconsistencies in volume and forms of training don’t lead to being in great shape.
So there is not much literature or any studies related to this but I believe strength training can build work capacity faster than endurance sports but especially when combined with zone 2 endurance work.
Right now I am trying to build work capacity via the idea of “squat everyday.” I also prefer building my running shape and so I am running at the gym. So if I could run 6 days a week, squat 6 days a week and feel that I am getting adequate recovery I will then transition to more cycling focus. I am riding just a bit each each week now but I feel in my case it’s more about this work capacity which will drive my ability to maximize my cycling performance when my body is ready. Like many here outdoor cycling is way more fun for me than indoor
So I prefer shorter indoor cycling and then put more effort into outdoor.
There is a great book called squat every day (6-days a week…) where the guy discuss a lot of this work capacity concept, but I have other books and experts as well. So I feel the same if my work capacity is high enough when spring comes, cycling “every day” will bring the fastest best results.
I would call the phase I am in base training, but it’s a very non-traditional base for a cyclist. It would be more called an extended transition period.
I frequently repeat, the actual plan is the icing on the cake and it’s really proper volume and recovery (and ultimately work capacity) that is the main component of performance. Many people say the fastest guys they know are bike messengers. I will do some interval training as I feel I have a more solid base but I like to wait until the last minute to plan that type of stuff rather than create a schedule early.
Not the answer you were looking for 