Singer IU reveals she's not feeling well.

On August 22 KST, IU shared that she was not feeling well. A video titled '40,000 people are waiting.. and I hit a roadblock

' was uploaded on her YouTube channel 'IU Official' In the video, IU is seen rehearsing for her concert in Manila.

Throughout the rehearsal, IU appeared tired several times. Back at her hotel, she explained, "After the rehearsal, I talked a lot with my staff about the Sangam concert and then arrived at the hotel after a long flight."

She continued, "The (Manila) concert venue was really great. I loved it. The rehearsal went well in a good mood," but she also confessed, "Unfortunately, despite finding such a great venue, I'm in very poor condition. This is the worst I've felt since the start of this tour."

IU added, "When I woke up this morning, I thought, 'This is bad.' I felt like I wouldn't be able to rehearse. But thankfully, I was able to sing, so we set things up nicely, and I kept the rehearsal shorter than usual. I covered a lot of songs, and I'll be disappointed if I can't perform them well."

She concluded by saying, "I think it's important to stay positive no matter what. I hope my face doesn't get swollen. I'll try to get some sleep quickly," expressing her concern and prompting sympathy from her fans.

SEE ALSO: IU celebrates surpassing 10 million YouTube subscribers