WASHINGTON (AP) — Republican presidential contender Ben Carson is brushing off rival Donald Trump's criticism of him as a "super low energy" candidate.
Carson says he does have a tendency to be "relaxed." But as a neurosurgeon who operated 18 to 20 hours at a time, he says he takes a backseat to no one when it comes to energy levels. Carson made the comments in an interview taped in Iowa for Sunday's "Meet the Press" program on NBC.
Trump and Carson are in a hot race in Iowa for the Feb. 1 caucuses, according to polls.
In a Florida speech Saturday, Trump zinged several rivals, calling Marco Rubio "sweaty," Jeb Bush an embarrassment to his family and Carson sleepy.
Carson says in reply: "I don't get into the mud pit."