Victory in her 200 metre freestyle heat was Katie Ledecky's "hardest swim of the week" after claiming 400m gold on Sunday.
Katie Ledecky showed no sign of fatigue from her world-record breaking exploits in the 400 metre freestyle on Sunday as she cruised to a heat win in the 200m.
Ledecky won the second Olympic gold medal of her career on day two at Rio 2016 with a sensational swim that saw her come home in three minutes and 56.46 seconds, five seconds clear of her nearest rival.
There was little time for the 19-year-old to relax, though, as she was back in action in the 200m heats on Monday, an event not thought of as Ledecky's strongest.
She trailed after the first length but the American soon found her rhythm and came home fastest in a time of one minute 55.01 seconds
"It was pretty hard coming off of last night," she said.
"Just got a couple hours of sleep but I think that was probably going to be my hardest swim of the week so I'm glad it's over with.
"It [her stroke] feels good. I feel like every year at the big championship meet my stroke just feels better than it ever has and once I get going, it's hard to stop."