1: 1. Choose high-quality tuna packed in water for a protein-packed meal. 2. Add Greek yogurt instead of mayo for a lighter, creamier texture.

2: 3. Mix in diced celery and red onion for added crunch and flavor. 4. Opt for whole grain bread for a nutritious and filling base.

3: 5. Consider adding avocado slices for healthy fats and a creamy texture. 6. Season with lemon juice, salt, and pepper for a refreshing kick.

4: 7. Experiment with different herbs like dill or parsley for added freshness. 8. Swap out lettuce for baby spinach for a nutrient boost.

5: 9. Use whole grain crackers or cucumber slices for a low-carb option. 10. Pair with a side of fruit for a balanced and satisfying meal.

6: 11. Prepare the night before for a quick and easy grab-and-go breakfast option. 12. Customize with your favorite veggies and spices for endless variations.

7: 13. Keep leftovers fresh by storing tuna salad in an airtight container in the fridge. 14. Enjoy as a sandwich, wrap, or atop a bed of greens for a versatile meal.

8: 15. Incorporate pickles or olives for a salty and tangy twist. 16. Serve with a side of sweet potato chips for a satisfying crunch.

9: 17. Satisfy cravings while fueling your day with this nutritious and delicious tuna salad sandwich. 18. Stay energized and focused with these must-know secrets for a healthy breakfast on the go.