Popsugar Fitness Lunch Lunches Under 400 Calories Lose Weight With These 32 Lunches Under 400 Calories 14 February, 2016 by Lizzie Fuhr 66 Shares View On One Page Photo 22 of 32 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 22 Lemon Tuna Salad Substituting lemon and olive oil for mayonnaise makes for a lighter, brighter tuna salad that's perfectly in line with the Mediterranean diet. Tuck yours into a pita, or serve it on top of a bed of fresh greens. Calories: 323 Previous Next Start Slideshow LunchHealthy Recipes