"Velvety Greek yogurt gives egg salad a protein boost along with probiotic bacteria. A study published in 2011 in the Nutrition Journal found that athletes who take a daily probiotic supplement have a 50 percent decrease in symptoms of upper-respiratory-tract infections. Eggs are rich in muscle-friendly protein, vitamin D, vitamin B12, and selenium. Dried fruit adds natural sweetness along with an extra hit of antioxidants and carbs...."