Billionaire Elon Musk announced that he is resuming his previous routine of working 7 days a week. "Back to working 7 days/week and sleeping in...office if my...kids are away," Musk said while reposting his 2022 video where he spoke about the routine, calling himself a "wartime CEO". "Working for...this many hours...hurts my brain," Musk said in the old clip.