My company is getting ready to release a major update of our software next week so we're crunching. This is the first time in my 6 years of work that I've worked 13+ hours a day. Barely get to see my kids.. How anyone can do this for long is beyond me.
I'm normally very strict on doing 8-9 hours a day so I sit down and get shit done when I'm working, but doing that for 13+ hours wears you down so fast it's unbelievable.