Let’s say an average person burns 2,000 calories a day.
Let’s say I run an average of 10 miles a day which burns 1,000 calories.
That means I burn 3,000 calories.
I’m burning 36 hours worth of calories in 24 hours.
I’m burning 1.5 times the average.
No wonder I’m tired.
I should be tired.
Extra physical activity is tiring.