[sudosysgen]

That's just not possible. You aren't going to be burning less calories during sleep after a workout, you're going to be burning more due to increased protein synthesis as your body recovers (unless the workout was very light).

Reduced fidgeting leading to 600 calories less in a day is not reasonable, either.

To drive this home, just look at professional cyclists : a lot of them have to eat 5000+ calories a day, because they burn 3500+ calories just training, on average, for years and years.

Additionally, if you work out more, you will increase your fat-free mass significantly.

In any case, Pontzer's work never seems to claim you somehow compensate against activity expenditure, it's actually a very strong independent variable in the model of the linked study?