ELI5: Where does the extra energy come from when you are about to quit doing cardio exercise but the next moment you don’t feel fatigue anymore?
Noticed happens to me a lot. Was finishing my usual training day on stair machine at level 5. After 8 min I was done, breathing like a dog, heart rate at about 170 bpm and wanted to stop immediately. Told myself to somehow do 2 more minutes to at least make it to 10 min. But step by step out of nowhere got the energy to continue up to 30 min and could do even more. Can it be psychological thing when brain wants you to stop and when you refuse, brain is like: “ok I tried, do whatever you want now.” #education source