The X Factor boyband also spoke about their new Sport Relief single 'Proud', saying they were "determined" to help underprivileged people they met on a trip to Uganda with their charity track.
"It's the first time we've had the official single," JB Gill said on Daybreak this morning (March 8). "Which we're very, very proud, excuse the pun, to be doing."
Bandmate Oritse Williams added that the humanitarian visit had been "one of the most incredible experiences" ever.
"Going out there and seeing some really disturbing things as well as amazing things," Williams said. "People go through some serious hardships but yet they're so appreciative of being alive every day and waking up in the morning.
"One thing it did is made us more determined to make this single as big a success as possible and make as much money as we can to really change these people's lives."
JLS also waived off suggestions of jealousy at the US success achieved by One Direction and The Wanted, with Aston Merrygold stating: "Obviously the Brits are taking over the world which is not a bad thing."
'Proud' is released on March 19 and JLS will perform the song during the Sport Relief telethon, which starts on Friday, March 23 at 7pm on BBC One.
They will also be taking part in a special one-off matinee concert for Sport Relief at The O2 on March 24 and will be joined by Olly Murs and Rizzle Kicks.
> JLS release behind-the-scenes look at new 'Proud' music video
Watch JLS in the video for 'Proud' below: