Stefania Follini’s Guitar

Origin
Stefania Follini is an Italian interior designer. She is known for being involved in a 1989 experiment on circadian rhythms, in which she voluntarily isolated herself for four months in an underground room thirty feet down a cave in Carlsbad, New Mexico, away from all outside indications of night and day. The experiment lasted from January 13, 1989, till May 22, 1989. In total, Follini spent some 130 days in the cave, thus breaking the women's world record for longest cave isolation. During her time, she suffered from sadness, weight loss due to Vitamin D deficiency and the inability to correctly identify the passage of time.

Effects
It only works when the user is alone and plays the guitar in an enclosed or isolated space. The user will be able to stay awake for periods of over 40 consecutive hours at a time. However, the user will lose weight due to malnutrition and will lose touch with the actual rate time moves at.