Lose Your Mind
      For the psychological condition, see 
insanity.
 
"Lose Your Mind" is BoA's 24th Japanese single. Alongside the title track is one B-side, "Smile Again". Lose Your Mind was released on December 12, 2007.
Music video
The music video features BoA as a supermodel on the catwalk. She and two other female backup dancers start dancing on the catwalk and are joined by three male dancers. The music video also shows BoA in a short black wig. Yutaka Furukawa from Doping Panda also makes an appearance in the music video, playing the electric guitar. BoA's three outfits in the music video are a huge contrast to each other. She and her backup dancers are featured wearing black clothes. Later in the music video they are all wearing more casual clothes.
Track listing
CD
-  Lose Your Mind (featuring Yutaka Furukawa from Doping Panda)
 
-  Smile Again
 
-  Lose Your Mind (featuring Yutaka Furukawa from Doping Panda) (Instrumental)
 
-  Smile Again (Instrumental)
 
DVD
-  Lose Your Mind (featuring Yutaka Furukawa from Doping Panda) (Music Clip)
 
Live performances
- 2007.11.24 - Music Fair 21
 
- 2007.12.07 - Music Station
 
- 2007.12.15 - Music Japan
 
- 2007.12.16 - CDTV
 
Charts
Oricon Sales Chart (Japan)
| Release | 
Chart | 
Peak Position | 
Sales Total | 
Chart Run | 
| 12 December2007 | 
Oricon Daily Singles Chart | 
5 | 
 | 
 | 
| Oricon Weekly Singles Chart | 
6 | 
28,128 | 
4+ | 
| Oricon Monthly Singles Chart | 
 | 
 | 
 | 
| Oricon Yearly Singles Chart | 
 | 
 | 
 | 
 | 
|---|
  |  | Korean singles |  | 
|---|
  |  Korean special and digital singles |  | 
|---|
  |  | Japanese singles |  | 
|---|
  |  Japanese collaboration and digital singles |  | 
|---|
  |  | English singles |  | 
|---|
 
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