# What workout did you do today? (2018/2019) **URL:** \ **Category:** Training\ **Created:** [October 19, 2018, 10:05pm UTC](https://www.trainerroad.com/forum/t/what-workout-did-you-do-today-2018-2019/4198 "2018-10-19T22:05:04Z")\ **Posts on this page:** 1\ **Showing post:** 3591
**Author:** ![Captain\_Doughnutman](https://sea2.discourse-cdn.com/trainerroad/forum/user_avatar/www.trainerroad.com/captain_doughnutman/32/7694_2.png) [@Captain\_Doughnutman](https://www.trainerroad.com/forum/u/Captain_Doughnutman)\ **Post date:** [May 26, 2019, 8:56pm UTC](https://www.trainerroad.com/forum/t/what-workout-did-you-do-today-2018-2019/4198/3591 "2019-05-26T20:56:02Z")
Have you read this thread? > [@Cardiac drift on longer workouts (Aerobic Decoupling)](https://www.trainerroad.com/forumt/cardiac-drift-on-longer-workouts-aerobic-decoupling/4745): > > Hi there, I have thought about cardiac drift recently. From what I understood there seem to be many different reasons for cardiac drift to occur: Heat. The body has to work increasing amounts to cool itself. Dehydration. The blood volume decreases the heart has to pump more. Increased fatigue. The body cycles though different muscle fibres. Mechanical reasons e.g. low inertia trainers (not sure about this one though). … What ever the reason, the body has to gradually produce more input (hear… And this: > **[Are You Fit? All About Aerobic Endurance and Decoupling](https://www.trainingpeaks.com/blog/aerobic-endurance-and-decoupling/)** > > What is decoupling and why is it important to your training? Joe Friel explains the role of decoupling in aerobic endurance and how to test it. > …aerobically fit endurance athletes experience a decoupling rate of less than 5%. I’ll have to take a look at my own data now!\* 🙂 \*[edit: crunched my 2hr indoor (power) and 3hr outdoor (speed) rides – both 0% decoupling rate.] --- _[View the full topic](https://www.trainerroad.com/forum/t/what-workout-did-you-do-today-2018-2019/4198)._