If today's children are told, can you climb the wall of the house, the wall of the school? Can you climb a tree to the top of a tree? 90% of boys and girls will answer "no" because they are not physically fit, they are afraid of falling from a height, or reluctance! One of the reasons for this is the homely nature, lying with a mobile phone all day. But when we were little, what we were able to do and these boys and girls are not 10% able to do.