In the FLOHow women can improve their productivity, happiness, and physical well being by keeping their natural cycles in mind and working with them (rather than ignoring them). In the FLO teaches women how to use their 28 day cycle to optimise their life by letting their internal clock and natural rhythms guide time management, diet, fitness, and more. This is so simple and yet under utilised that it is shocking. It makes perfect sense when you think about it: