Based on the context and the answer, generate a question. 

Context: Finally flitted off to sleep at 2 am . It was a blazing hot day on Sunday , the day of the race . It started off pretty nicely at 8 am and everyone had a good swim but by the time it reached the bike and run segments , the sun was absolutely crazy ! I really admire these athletes for being able to bike 40 km and run 10 km in that heat .

Answer:

It was very hot that day .



What may be the reason for the sun being crazy ?