The slightly more honest ones might be conflating a weeks of effort to a single day. This is the kind of "white lie" I could almost see myself doing (but not to this extreme). So perhaps one day this week they got up at 4:30. Or perhaps twice this week they did a navy seal workout. But in their reporting this is all a "normal day".
Or, since appearence is everything these days maybe they are just saying what they think they need to say. Results don't matter, it's how much effort you appear to be putting in. This is what is valued. CEOs need to appear like they are valuable. Imagine the CEO that was honest and said "I get up at 9:00am and relax with coffee and a newspaper while I get ready for the day." People would deride them. So like all people who make it to the top they play the part, and lie.