1 Add time each week to work your way up to 30 to 45 minutes of continuous exercise. 2  As you get stronger, try interval training once a week to help boost endurance and burn more calories.  Work your way up to 5 to 6 days of cardio and try to vary what you do and how hard you work.
To achieve a sear on the outside and keep it rare inside, place the tuna on the skillet or grill and let it sear for two minutes on the first side. Flip the tuna and let it cook for another two minutes, then remove it from the heat. Watch the tuna as it cooks to make sure you don't overcook it.
Brush the tuna evenly with the remaining 2 tablespoons olive oil. Sprinkle each steak evenly with salt and pepper. Grill the tuna for 3 to 4 minutes per side, or until desired degree of doneness. Place each tuna steak over 1 slice grilled bread.Top each tuna steak with desired amount of lemon pepper butter.over and chill. For the tuna: Preheat the grill to medium-high heat, about 350 degrees F. Spray the grill rack with nonstick, nonflammable cooking spray. Brush the bread slices evenly with 2 tablespoons olive oil. Grill the bread until toasted, 2 to 3 minutes per side.