https://scontent.fath3-2.fna.fbcdn.net/hphotos-xtf1/v/t1.0-0/s526x296/12804814_10208727068471849_3639991170291956856_n.jpg?oh=a60b7b49070602e57e99d4dfdf3545dd&oe=57640241 Yesterday my bf asked me to calculate the calories he burns to go up a hill. So of course the first thing I thought was to take the difference of the potential energy to estimate that work and so I said that work equals W=mgh, so for a person of 60kgr, assuming that g=10 m/s^2 and h=200m I said that work is W=120.000 J. So then I thought that this calculation is only for vertical lifting of his weight but still is correct since I estimated it with the potential energy from level zero (Point A) to point B which has potential energy. But still is this calculation enough? Or should I add the work from point A to C and then add the vertical work? I want to know the total work needed to climb the hill and the energy consumption to move his weight from A to B.