Seriously, yes it is hard trying to determine what is good for one and not for another. I will do the same ride and one day feel spent and then next time I'll feel great. I'm not sure why but I do try and figure out what I may or may not have done over the last 24 hours i.e. ate, slept, exercised etc and try to determine if in fact played a part on my performance.


So many factors play a part and I'm not one who takes any of them too seriously. Having metric can be fun but it can also be distracting.