52.) 132. If the calories used column is per hour, you would just have to add 66 and 66, giving you 132.
53.) One health benefit from doing regular activities that involve physical exercise is that you would over all be healthier. When you don't do anything and all you do is eat, your body will just store that fat, thinking it'll need it later because you're not doing anything. In order to get rid of those extra calories, you would need to be up and moving about so you can stay fit and steer clear of any health problems that may arise from doing nothing all day.