Haven’t read all of this so this may have been covered…
A few years ago I was finding I was exercising regularly but my fitness was getting worse and worse, plus I would get a cold after every ride. I went to the Docs and was brushed off with a “there’s a bit of it going around”
Looking back now I was seriously over doing it – I would rarely rest up and would always be on the go – riding or something for a few hours at least every day. My idea of exercising was full on all the time rather than training in my HR zones. I look back now at my HR logs and see that I was constantly up at my MaxHR everytime I went out with no real aerobic training / time. In fact my idea of resting was to go trail building which would be 4-5 hours digging or clearing.
Then I’d get home and with two young kids and a stressful job it wasn’t like I’d put my feet up – but I’d say MTFU to myself!
Everything finally came crashing down when I caught a virus and rode for two days over a weekend – I spent the next 18months with PVF/CFS/ME whatever you want to call it and gave me the biggest learning experience of my life.
Looking back, I wish I’d spent more time training to build that base aerobic fitness, spent more time recovering and listened to my body rather than pushing on through it.