e e childr undnderstd thatat. and d i admire himim for his coe in sharing h his story wititu.eporter: khan's recommendatio are medidiatelput ininto practice.. it's's time to getet out of thee clclassroom. fromowow, all ternrnoon assess wiwill be held o outside. thpupilslsere are now learni thathe h healtof theheiryes is more impmportant than n intense study anand good gradedes. and thatat this sort o of learg can bebe really fun. for most of those here, in any case. host: the fact is, we human beings sit around too much. according to a study by the world health organization, 42% of people in germany are couch potatoes. that's more than the global average. in kuwait, it may apply to as many as 67% of the population. and that's bad for our health, too. too little exercise can give rise to diabetes, heart and circulation disorders, and weight problems. 2.3 billion people were overweight in 2016. in the small town of naron in northwest spain, people are actively tackling the issue. reporter: hard as it may be, they set off at 7:00 in the morning. and carlos pineiro knows only too