My story: Back in the day (when my daughter was a toddler) I rode 100 miles a week on a 25 mile circuit that I could do in about an hour 5-10. With her in a seat on the back I could do it in about an hour 15-20. I was about 100-110 avg rpm. Without realizing it seems I was doing interval training. My best was a 50m charity ride that I did in 2hr 10.
Now: I'm 49 and just started back riding after a 20 year layoff doing little more than walking. I started in July. I would bonk often even on little hills but never cracked. I was averaging about 12mph. By training up from 6m to 12 and now 20 and trying to 'saddle up' at least every other day (without exceeding 5 days a week) I am already seeing the results.
I took a week off because of weather and then purchased Computrainer time at a LBS. Yesterday I rode a 21m (2% max grade) route of which I finished almost 18m in the one hour session I scheduled. Much to my surprise I was at 17-18mph at 88 avg rpm and was in Zone 4.
I agree with Limerick, as today I hurt a bit, so even a one week layoff set back my progression. My 20m outdoor session the week before was a piece of cake. I had my moments as it was my longest ride so far and was outdoors with some 5% grades but only slightly bonked early and was up on the pedals on some of the hills with a good burst over the top towards the end. I felt great with no pain except my butt for which I'm still trying to figure out if the Selle Italia is still breaking in or it is breaking me in.
So...after that long rambling over nothing except my ego...is that once I get to my performance level I am going to avoid at all costs letting it slip away again. It will take me probably the better part of a year to get back to 20-22mph and 110 avg rpm. I will probably be lucky to make the first 50m charity ride in May at that level but hope the Computrainer will help get me there (Wisconsin is not rider friendly in the winter).
The other thing...how long should I give this saddle before I give up on it? I've got over a 150m on it and it ain't getting better. Also any suggestions for a saddle for an alumunium frame? Only the fork is Carbon and as far as stiffness it doesn't seem any worse than my steel frame (maybe even a little better).😕