Not all athletes competed naked in the Ancient Olympics. The penis restraints were not worn for prudish reasons: they were worn to keep the penis from flapping and causing pain while an athlete ran. Some wore a kynodesme, a thin leather thong used as a penis restraint. The kynodesme was tied tightly around the part of the foreskin that extended beyond the glans. The kynodesme could then either be attached to a waist band to expose the scrotum, or tied to the base of the penis so that the penis appeared to curl upwards.
感觉天热时跑起来通风透气也挺重要的
如果你跑得的长，超过半马，全马、超马，凡士林还是抹一下。尤其下雨，或者特别干燥。
只要不畸形，就那么回事儿。
肯定是多一层布更热，但是保护会好一些吧！
同理，户外不光着的原因也是为了防晒，被蚊虫叮咬，被树枝刮伤。。。
下湖游泳是反过来，衣服湿了不容易干，背着沉。穿着点下湖其实是为了尊重别人
我几乎所有的跑步短裤都是有内衬的。再穿内裤会很不舒服。
有一次去跑越野赛忘了带短裤。临时去沃尔玛买了一件，没有内衬。就穿了内裤。个人认为这个短裤还是挺好看的。算是歪打正着。
他们会用布条把那儿扎着啊。
Not all athletes competed naked in the Ancient Olympics. The penis restraints were not worn for prudish reasons: they were worn to keep the penis from flapping and causing pain while an athlete ran. Some wore a kynodesme, a thin leather thong used as a penis restraint. The kynodesme was tied tightly around the part of the foreskin that extended beyond the glans. The kynodesme could then either be attached to a waist band to expose the scrotum, or tied to the base of the penis so that the penis appeared to curl upwards.
照片不贴了，你自己查维基。
https://bbs.wenxuecity.com/kghy/3585803.html
我觉得480BC的那个古画很好看，是个蝴蝶结。
现在的，好像复制不出来的样子。挺滑稽！