you know, of course i am happy with how i did here. it s not my goal to beat anybody in particular. it s about achieving what i feel like my potential is. reporter: dressel adding to his olympic gold medal count, in addition to the two in rio. right now he is the gold standard of men s swimming. the g.o.a.t. of women s swimming katie ledecky, brings two golds and two silveras back home, ten olympic medals in her career. i talked to her today. she told pethat it s still like a dream come true. here she is. it s an amazing feeling to be bringing home two golds and two silvers here and to compete in my third olympics. it s something i never would have imagined when i first started swimming. reporter: what do g.o.a.t.s eat? healthy. reporter: after years of sacrificing, discipline, a celebra celebratory meal and how are you going to relax now that it s