Canada's life expectancy is so high because we have a great medical care program, a high standard of living, a relatively good diet, and a fondness for outdoor activities
Japan's life expectancy is so high because the food commonly eaten there is a combination of small portions, low calorie foods like fish and veggies, and beautiful eye appealing dishes which all contribute to a longer and healthier life span
Japan is 4% of the size of Canada which presents many challenges
Japan's area is 377,944 km2
Because of the size and population of the country the houses are much smaller. Many families live in apartments no bigger than a family room in North America