1: 1. Start with high-quality tuna packed in water for a lean protein boost.

2: 2. Mix in Greek yogurt instead of mayo for a creamy texture with less fat.

3: 3. Add crunchy veggies like celery and red onion for extra fiber and nutrients.

4: 4. Season with lemon juice, Dijon mustard, and black pepper for a zesty kick.

5: 5. Serve on whole grain bread or lettuce wraps for a satisfying and healthy meal.