Declining estrogen does more than affect your cycle — it quietly dismantles how your cells respond to insulin. Perimenopause insulin resistance often develops years before labs flag it. Cathy breaks down the mechanism, the warning signs your doctor may be missing, and what strength training, protein, and hormone therapy evidence actually shows. Research-backed. Honestly written.

The workout that worked at 38 stopped working at 43 — and adding more cardio made it worse. This is not a discipline problem. It is a hormonal exercise physiology problem with a specific solution. Perimenopause requires a completely different training stimulus: progressive resistance training as the foundation, HIIT for visceral fat, and treated recovery as a training variable. A meta-analysis of 38 studies confirms it. The 12-week turning point is real. Here is the evidence-