Manual of gainful exercise

A manual of gainful exercise was a magical book that contained exercises and enchantments designed to supernaturally increase its reader's strength.

Description
Manuals of gainful exercise were thick books that contained fitness exercises and diet suggestions.

Powers
Charged within the book's words was a powerful magical enchantment. If the reader completed the book within a period of 6 days, an activity that required a total of 48 hours of reading, the reader was endowed with a substantial improvement to physical might, including the ability to further extend it beyond natural capabilities.

Once the book was fully read, it spent its magical power and became an ordinary book. However, the book recharged its power after one century.

Notable Owners
The githyanki knight Al'chaia, who led a detachment of githyanki inhabiting Stardock in the, owned a manual of gainful exercise and a tome of clear thought that she had falsely promised to share with her most accomplished soldiers.

Appearances

 * Adventures
 * Waterdeep: Dungeon of the Mad Mage