每个领域优秀人士的日常习惯都是高强度的工作（每天四到六小时），然后配合长时间优质的睡眠（每晚九小时）。
The daily routines of top performers , in any field , are characterized by periods of intense work ( 4-6 hours per day ) followed by significant quantities of high-quality sleep ( 9 hours per night ) .
习惯强度