Bill Gates used to compete with his colleagues to sleep as little as possible

Bill Gates, co-chairman of the Bill and Melinda Gates Foundation, during the EEI 2023 event in Austin, Texas, US, on Monday, June 12, 2023. (Credit: Jordan Vonderhaar/Bloomberg - Getty Images)

Bill Gates has some regrets. The Microsoft co-founder has openly admitted he wishes he'd spent more of his time with his family, enjoying vacations and weekends with them while his children grew up.

But the billionaire philanthropist has once again lifted the lid on his previously extreme work habits, this time examining how much rest he got as a budding entrepreneur.