What do all these observations teach us? They suggest that we, too, should use common sense. The sun’s rays have a stronger effect in the mountains than in the lowlands or by the sea, and if you are used to living at a high elevation you will be able to stand the sunlight there better than in low-lying areas. The converse is true of people who are used to living in lower areas. They would do well to avoid the sun’s rays in the mountains but become less tired when exposed to the sun in their habitual lowland climate.
Let me tell you an experience from Sri Lanka that confirms my point. Together with our friends who lived by the sea we went to visit some other friends in the beautiful hills. How amused the hill dwellers were when they saw the lowland folk quickly make for the shady places because the mountain sun was too much for them. Not so with us Swiss; we felt much better than we would by the sea, where our lowland friends were at home and on their best form.
*1146/28/1*
