The 20-year-old became the first man to swim the 100m breaststroke inside 58 seconds when he set a time of 57.92 seconds at the British Swimming Championships in April,
That came eight months after breaking the 50m breaststroke record.
“There are lots of areas I can improve to get every millimetre out of myself,” Peaty told BBC East Midlands Today.
“I am more pleased to be the first person to go under 58 seconds. I never thought I would get anywhere near it.
“It boosted my confidence massively knowing I can go that fast.
“It’s a great position to be in, but it’s now about re-focusing and re-motivating to see what I can get.”
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