The metabolic cascade behind low energy, rising weight and fading libido - and how seasonal rhythm restores it Testosterone, metabolism and the cost of ignoring season... When Rhythm Drifts: Testosterone, Metabolism and the Quiet Cost of Ignoring Season Conversations around hormonal health often centre on women. Yet in clinic I see a parallel, quieter story unfolding in men: metabolic drift, shifting testosterone, energy that thins rather than collapses. I do not believe test