Originally Posted by
Beneficial Ear
While its good to have the computer to know the actual numbers, in the end I think its better to feel it out and "just know" - as this makes for immediate and accurate decision making.
Nothing wrong with 'just riding by feel', but for the racers or those really interested in committing to training hard for substantive improvement, objective numbers are the way to go.
You'd be shocked with how much you slack when you 'just ride' - fire up something like TrainerRoad that lays out the intervals and power targets for you to hit, and you'll realize that what you thought was 'hard' isn't even close to what hard is supposed to feel like.