Women and men's bodies are not identical. Most exercise routines are designed in a cookie cutter and progressively linear fashion. Women have hormonal fluctuations in alignment with the phases of their menstrual cycle; men obviously do not. Being aware of what stage of your cycle you are in is critical when deciding what type of workout is best for that day.
Women naturally have a higher percentage of body fat for biological reasons (child bearing), however unfair it may seem. In addition to having a naturally higher body fat percentage, women's bodies often do shift during and after childbirth, especially if a cesarian section was performed. Men obviously do not face these physical demands.
In yoga, I was taught to convey the importance of encouraging clients to listen to their body as opposed to pushing harder because they were able to do an exercise the day before. This applies to both men and women. It is important to listen to the subtle signs our bodies give us. In doing this, we prevent burnout and are more likely to stick to a routine that works with our fluctuations rather than a constant drill sergeant approach.