This a bit late, but I hope you find it useful.
I gather you’ve been off the bike for the winter? (whatever this thing called “winter” is) I started riding around the start of September after 7 or 8 years off the bike. I was low carb the last time I rode, and went keto back around April of '15. It took me over a year to lose 50 pounds.
My biggest finding is that now, six months later, I’m still adding speed and endurance. My rides are short - 13 miles average with a “long” ride being only 20 miles. Last time I rode regularly, 20 miles was an easy Saturday ride. I’m finding that my average speed is still getting better.
In my mind, the 7 or 8 years is still outweighing the keto benefits. OTOH, I spent the last six months adding muscle in my legs. It’s happening, just slowly, which is back to age, I think.
I found that I needed to lower my saddles on both bikes. Not much, maybe 1/4". I don’t think I got shorter, and if I did get smaller in my bottom, that would have been like lowering the saddle itself. I’m thinking that’s just a little lack of flexibility. I had no trouble getting used to my saddles, that acclimation didn’t go away.
No real re-fitting, and certainly no new bikes needed. One of my bikes is a model year 1997 (bought it used) and the newer one is a 2005.
Again, hope this is useful.
