You can also keep an eye on your heart rate variability, which is a measure of the time between successive heart beats. Whenever it varies over time, you could be well rested and handle more stress. Whenever it is monotone, almost exactly the same for each heart beat, you could be fatigued or under stress. It can help you to decide what training intensity is appropriate for a certain day.
Intro to hrv: https://www.hrv4training.com/blog/heart-rate-variability-a-primer
I have an interesting problem....so if i clean my drivetrain i get an interesting feeling ... i mean when i pedal its not smooth.( its feels like its popping etc)..when its getting a bit dirty its become super smooth.....chain and casette is not that old, same probleme after replacing both....why is this ? i cant understand...
Any1 please help.