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
- Regional fat changes induced by localized endurance training — J Strength Cond Res. Ramírez-Campillo R et al.
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