Can't Sleep, Can't Eat, I'm Sick

"Can't Sleep, Can't Eat, I'm Sick"
Single by Namie Amuro
from the album Play
A-side	"Ningyo"
Released	May 17, 2006 (2006-05-17)
Recorded	2006
Genre	Dance-pop[1]
Length	3:49
Label	Avex Trax
Songwriter(s)	Michico
Producer(s)	T.Kura Michico
Namie Amuro singles chronology
"White Light/Violet Sauce" (2005) "Can't Sleep, Can't Eat, I'm Sick" (2006) "Baby Don't Cry" (2007)

"Can't Sleep, Can't Eat, I'm Sick" (stylized in all caps) is the 31st single by Japanese singer Namie Amuro. It was released by Avex Trax in Japan alongside "Ningyo" on May 17, 2006, as a double A-single. "Can't Sleep, Can't Eat, I'm Sick" served as the second single from Amuro's eighth studio album Play (2007), but "Ningyo" was excluded from the track list. "Can't Sleep, Can't Eat, I'm Sick" was produced by her two most frequent collaborators at the time: T.Kura and Michico for Giant Swing Productions. Musically, it is an upbeat urban contemporary and dance pop song that features a hefty amount of saxophones. Lyrically, it speaks of a lovesick person who can't get anything done when he or she thinks about their lover.

Music critics praised the production on "Can't Sleep, Can't Eat, I'm Sick" and compared it heavily to the work of American singer Jennifer Lopez. Commercially, the single performed well in Japan, peaking at number two on the Oricon Singles Chart. The physical format was certified gold by the Recording Industry Association of Japan (RIAJ) for selling over 100,000 units.

To promote "Can't Sleep, Can't Eat, I'm Sick" a music video directed by Masashi Mutō was filmed, which focuses solely on a dance routine. The choreography was done by Shawnette Heard, who choregraphed for a number of western singers such as Janet Jackson. Since its release, "Can't Sleep, Can't Eat, I'm Sick" has appeared on several of Amuro's concert tours and subsequent live releases, as well as her greatest hits album Best Fiction (2008), and was re-recorded for her final compilation album Finally (2017).