The answer is true. Originally, the Olympic Games consisted of fewer events than they do now. The original events included wrestling, discuss throw, javelin throw, running, chariot racing and some others. Much recent addition to the Olympic Games include table tennis and martial arts.
So you trust in yourself basically?
•trusting one’s abilities, qualities &’ judgement
Since there are no options listed to choose from, my best guess would be watches, since a lot of apple watch products are now sold with built in heart monitors.