He says he is usually in such a rush that he skips breakfast most days. On the days he does eat breakfast, he likes an omelet.
In a Reddit AMA, He mentioned that showering is the most important part of his day. He says that he doesn’t feel in the right headspace without his shower, and a critical part of waking up and preparing him to face the challenges of the day.
Musk claims he regularly works 80 to 100-hour workweeks, with most of his skillset being focused on design and engineering work. Approximately 90% of his time at SpaceX involves design work, and it takes up 60% of his day at Tesla.
He doesn’t pay as much attention, If Musk does take lunch, He’ll usually, wolf it down during an afternoon meeting.
Here's How Elon Musk Weekly Schedule Looks Like !!
Recently he’s decided to scale back to spend more time with his family — so long after the younger kids are in bed, then spend the next few hours reading books, and watching anime (Evangelion and Death Note).
After heavy schedule allowing him his necessary 6 - 6.5 hours of sleep, before doing it all again in the morning.