As women move through their 40s, hormonal changes can begin to affect energy levels, sleep, recovery, mood, and body composition. While these shifts are normal, the right exercise routine can help support both physical and emotional wellness during this stage of life. How Hormones Affect the Body After 40 Changes in hormones such as estrogen and progesterone may contribute to: Increased fatigue Slower recovery Weight gain around the midsection Mood swings or stress Reduced mu