"Sleep Strategies to Transform a Day's Rest into Peak Performance: 7 Sleep Methods Employed by the World's Business Elite" 1800 yen + tax Ryo Kadoya "Stanford Method for Optimal Sleep" 1500 yen + tax Seiji Nishino "Sage's Sleep: How to Quickly Eliminate Brain Fatigue" 1400 yen + tax Mentalist DaiGo Condition: Purchased from a used bookstore in 2025. "Sage's Sleep" has a few folded corners at the top of the book, which have been smoothed out. Therefore, the product condition is listed as "slightly damaged/dirty," but the inside is in good condition. Although it is a used item, there are no stains that would interfere with reading the text. ● Cover: Yes ● Sun damage: None ● Creases: None ● Scratches: Minor scratches on the cover ● Folds: As mentioned above ● Writing: None ● Other notes: This item can be purchased immediately. Please consider this item with the understanding that it is used. (There may be oversights in the condition.) [Shipping Method] Yu-Yu Mercari Delivery Yu-Packet Post will be used. The book will be wrapped in vinyl and packaged in a kraft envelope, then posted in a mailbox. (The mailbox collection time will be provided after posting. No reply is needed.) Also, smaller items may be shipped in a Yu-Packet Post mini dedicated envelope.