As women enter their 40s, certain forms of cardio may do more harm than good, due to hormonal shifts, slower recovery, and joint vulnerability. The most notable cardio to avoid is long-distance endurance running or excessive high-impact cardio. Extended runs can accelerate muscle breakdown, increase inflammation, and stress already delicate joints, especially as estrogen declines, heightening the risk for injury and slowing metabolism further. Group fitness classes labeled as “Bootcamp,” “Circuit,” or “Sculpt/Burn” often emphasize high repetition or continuous high-intensity […]
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