Infinite Stamina Open Source

local player = game.Players.LocalPlayer

local function setup(char)
    local State = require(char:WaitForChild("Client"):WaitForChild("State"))
    game:GetService("RunService").Heartbeat:Connect(function()
        State.stamina.current = 200
        State.stamina.fullRegen = false
        State.stamina.regenDelay = 0
    end)
end

--doing this so when you die it doesnt resets itself
if player.Character then setup(player.Character) end
player.CharacterAdded:Connect(setup)