Anything that he does over and above merely staying alive will be defined as work, and is supported by "workcalories" which he takes in.
维生以外所做的一切可以定义为工作,由摄取的“工作卡路里”支持。
2
Most people who go on "low" carbohydrate diets complain of low energy and quit, not because such diets can't work, but because they consume insufficient calories.