Sword of Stamina

Weapon (longsword), legendary While using this sword, you gain a +3 bonus to attack and damage rolls with it. While attuned to the sword, magic cannot give you exhaustion and you have advantage to resist exhaustion from non-magical sources. Note that you can use the sword without attuning to it, but you do not gain the resistance to exhaustion.

Sentient. The Sword of Stamina has an Intelligence of 18, a Wisdom of 16, and a Charisma of 14. It communicates telepathically and encourages its owner to strive ever onward. If it feels restless, it may awaken its owner in an attempt to get out for some exercise.