The 10 Best Protein Sources for Runners

The 10 Best Protein Sources for Runners

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Few foods provide more protein per calorie than albacore tuna. One can of white albacore tuna packed in water provides 41 grams of high-quality protein in just 220 calories. Albacore tuna is also a good source of vitamin B12, a very important vitamin for runners because of its role in cellular energy production.