How athletes can tame high temperatures at Olympics in Tokyo

Wesley Korir, of Kenya, right, hands a bottle of water to eventual winner Eliud Kipchoge, also of Kenya, in the men's marathon at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Sunday, Aug. 21, 2016. (AP )

Ever wondered why the Olympic games are usually held between July and August? Considering that 73 per cent of IOC revenue comes from sale of Olympic games broadcast rights, the games must be held when they can maximise that revenue.

But it has not always been this case. 1968 Olympic games were held in October. The last time Tokyo hosted the games in 1964 it was in the cooler month of October.