How 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). the Cycle Diet book teaches women how to use their 28-day cycle to optimize their life by letting their internal clock and natural rhythms guide time management, diet, fitness, etc. (This is so simple and yet under-utilized it is shocking. It makes perfect sense when you think about it: You have different energy levels at different times of the month, different libido levels, etc. so why not use foresight to plan projects for when you are at your most effective, and understand when you need more emotional connection with others?) there are specific tips on what to eat and how to exercise depending on what phase you are in-and it works. Women are getting promotions, losing weight, and in one case thus far, literally clearing their endometriosis by using the cycle syncing method.