Sarah Teichmann: ‘I wake as early as 4am and think about work’

The 42-year-old scientist is head of cellular genetics at the Wellcome Sanger Institute, CambridgeSleep I need seven or eight hours. My daughters, aged 10 and five, are in bed by 8.30pm. My husband and I have different methods of getting them to bed: he likes nature television programmes; I like reading in German. Both my father and husband are German, so we try to maintain the language. Before I go to sleep, I read books such as Sheryl Sandberg’s Lean In, or essays from Harvard Business R