During the 19th century, a man had to go outside and work hard to provide a fair amount of food for his family. Even, his family members supported him by planting crops in their backyard. But, the inventions in the latter part of the century changed this to an trend, where the amount of physical work reduced. People started to use their brain which yielded the necessary things for them without much effort. Adding to this, the evolution of technology provided more desk jobs, which decreased the amount of physical activities done in a day.