This is the most legitimate version. Many server owners install admin menus (like ESX Admin or vMenu) that include a toggle: SetPlayerStamina(PlayerId, true) . When active on the server side, every player on the server automatically gets infinite stamina. You cannot bypass this if the server has it disabled.
If you want to enable infinite stamina globally for all players on your server, you can use a simple client-side Lua script. This prevents the "exhaustion" state by constantly resetting the player's stamina levels. Lua Script Implementation: You can create a client.lua fivem infinite stamina
To implement infinite stamina in FiveM, you need a client-side script that resets the player's stamina value every frame. Using the RestorePlayerStamina native within a continuous loop is the most reliable "proper" method to ensure the stamina bar never depletes. Standard Infinite Stamina Script This is the most legitimate version