Another reason to back your perception of exertion and again helps support why I prefer to programme based on exertion/effort and time. That doesn't mean to say external assessments of speed/power are unimportant - they are crucial in tracking your response to training. This data is from 5,500 training sessions collected over 4 years with 21 professional cyclists from Team Sunweb a hugely successful set up. . . . From the author: . . . itβs the relationship between internal and external metrics that tells you whether youβre getting fitter or overly fatigued. In training, itβs meaningless to know that your internal load is going up or down if you donβt also know whether youβre going faster or slower. In racing, itβs useless or even counterproductive to know what power output you βshouldβ be able to maintain if you donβt also consider how youβre feeling that day. So the message here isnβt that you should ditch your power meter. Itβs that you should also trust how you feelβand track it. Those subjective numbers, which it may seem like youβre pulling arbitrarily out of a hat, are trying to tell you something meaningful. . . . #boxingscience #boxing #boxingtraining #boxingvideos #boxingworkout #boxingfans #boxingtalk #boxingfit #conditioning #sprints #sprinting #hiit #highintensity #intervaltraining #sit #sprintinterval #winning #running #runningmotivation #run #runninghype #hiitworkout #runningmotivation #fitnessmotivation #winner #fight #fitnesslife #fitnessjourney #runningman #instarun (at Sheffield) https://www.instagram.com/p/BpWR5bLA5TQ/?utm_source=ig_tumblr_share&igshid=1qfnh555t7t5v