'My cancer left me too tired to work' - BBC Health News 25th May 2008

When Tilly Casson returned to work after treatment for breast cancer she was constantly fatigued. She had to work 12 hour days, including a lengthy commute, and was in bed by 8pm every night. She knew a short nap would help her survive the day better and looked longingly at the bean bags dotted around the offices where she was working, but felt unable to use them.

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