Originally Posted by Badger6

100% this. Detraining is a thing that happens pretty fast. I sometimes go on holiday and can’t take a bike along, 4+ days no riding, the first one back is usually pretty miserable, even though I’m “rested."

To further expand what I was saying for the OP (or anyone), pdlamb really hit the right point. If this is the ONLY metric one is using, it probably won’t be helpful, but if you use this in conjunction with other data points that you’ve learned to use to gauge your condition, I think you’d find that you are more productive.