Key Takeaway: Abdominal crunches strengthen abdominal rectus musculature but do not selectively mobilize overlying visceral or subcutaneous triglycerides. Systemic caloric deficit is the sole physiological mechanism for abdominal fat loss.
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Scientific References & Clinical Studies

  1. Regional fat changes induced by localized endurance trainingJ Strength Cond Res. Ramírez-Campillo R et al.

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Wissenschaftliche Referenzen & Studien
  1. Self-monitoring in weight loss: a systematic reviewJ Am Diet Assoc.
  2. Dietary energy density and behavioral complianceLancet Diabetes Endocrinol.