大象传媒

Bear Grylls, who recently filmed his NBC Show 鈥淩unning Wild with Bear Grylls鈥� with United States president, Barack Obama, said his main concern was to not "hurt the president".

The survival expert thought it was one of his friends "doing a spoof" when he received the phone call asking him to shoot the "mini adventure" with the president.

Bear said he spent "an unguarded and honest time" with Mr Obama, and said he came back "pinching" himself when filming was finished.

He said it was different to a normal filming experience as he had "60 secret service in tow", as well as "helicopters buzzing about".

This clip is originally from Afternoon Edition on Tuesday 8 September 2015.