"challenge your limits" is a correct and usable phrase in written English.
You can use it when encouraging someone to push themselves and strive for something that they may have considered to be unattainable. For example: "The upcoming race will be a great challenge. Push yourself and challenge your limits to see what you can achieve!".
How likely are you to challenge your limits, when 30 seconds of googling is enough to find a million willing enablers?
The possibility I never imagined was finding a message in Springsteen's lyrics about growing up and getting out of town -- the one I needed the most as I left home for the first time -- is that it's good to challenge your limits and stretch as far as you can, but it's better when you always remember where you came from.
Then there is eustress, which is positive stress brought on by good mentors and coaches who are trying to get you challenge your limits and succeed, or by physical therapists who are helping to strengthen your muscles to come back from an injury.
Explaining why he chose to make his first film within Dogma's demanding framework, Mr. Levring says: "Sometimes you set yourself a whole different way of doing something in order to challenge your imagination to its limits.
(Mr. Bolton's response: The toilets, like Marcel Duchamp's Readymades, "are intended to challenge the limits of good taste").
Several cases before lower courts, including a suit filed by the Republican National Committee against the Federal Election Commission, seek to challenge those limits.
No one knows where the limits of our adaptive capacity are, but a path towards 10C of warming will likely challenge these limits.
"I set out to challenge my limits," he said, " and the challenge has not broken me yet".
Charles R. Scott, a National Geographic-featured adventurer, encourages people of all ages to challenge their limits.
Mr. Suminksy declined to say whether he would challenge any such limits.
I did see signs of leaders becoming willing to challenge their own limits.
