When I was getting my Ph.D., my advisor jokingly told me that his lab has three 8 hour shifts per day, and I could pick two to work.
This was never literally practiced.
But excessive hours were the norm. And I loved it. It helped me launch into a successful career.
But it hurt my relationship with my partner (now wife), and it burned me out.
I miss those days, but I don’t miss what they did to my health.
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