After being reminded of Dr. Sims' works, I picked up her second book, Next Level - Your Guide to Kicking Ass, Feeling Great, and Crushing Goals Through Menopause and Beyond.  Skillfully she explains exactly what our hormones are doing during perimenopause, menopause, and after.  Along with proper fueling, she has a specific training protocol for women in this phase of their life.  I'm incorporating her protocol into my clients' training as well as my own.