Kardec Trader argues that end-of-day fatigue is mental, not physical, and traders use it as an excuse to skip journaling. Spend five minutes unloading your thoughts and you'll feel better in 15 minutes, even if you have energy to exercise afterward.
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At the end of your trading day, if you feel really tired, but you still have the physical energy to go do sport or whatnot, it's unlikely that you're actually physically fatigued. I think there's like a physical or emotional experience where when your mind kind of gets full, you're not tired. If you need to go for a run or whatever it is, physically, you can do it. It's the amount of kind of mental data that you're carrying is, like, weighing down on you, giving you the feeling like you're tired. And I believe that that's a primary excuse that traders give to not do their journaling. At the end of the day, they're like, ah, I can't, I can't. Like, no, no. You'll actually feel in 15 minutes if you spend five minutes just getting your thoughts out.