Worth reiterating, I've seen good people run themselves into the ground with an endless 'crunch', because they felt it was a valid strategy. 'Running themselves

Worth reiterating, I've seen good people run themselves into the ground with an endless 'crunch', because they felt it was a valid strategy. 'Running themselves into the ground' might seem wishy-washy, but to make it more concrete: people have _had to_ take time off work days before a big deadline because they couldn't work. I'd rather the marathon than the brick-wall crunch.