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Marni Sumbal

MARNI SUMBAL , MS , RD , CSSD , LD/N , holds a master's degree in exercise physiology and is a board-certified sport dietitian. Her books include Essential Sports Nutrition and The 365-day Running Journal . She helps athletes prepare through Trimarni Coaching and Nutrition. Marni has completed 16 Ironman-distance triathlons (including the Ironman World Championship in Kona, Hawaii).
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