local screenGui = Instance.new("ScreenGui")
screenGui.Name = "Gui"
screenGui.ResetOnSpawn = false
screenGui.Parent = game.Players.LocalPlayer:WaitForChild("PlayerGui")

local button = Instance.new("TextButton")
button.Name = "Button"
button.Size = UDim2.fromOffset(50, 50)
button.Position = UDim2.new(0, 10, 0, 30)
button.Text = "Off"
button.BackgroundColor3 = Color3.fromRGB(50, 50, 50)
button.TextColor3 = Color3.fromRGB(255, 255, 255)
button.Font = Enum.Font.SourceSans
button.TextSize = 24
button.Parent = screenGui

local stamina = false

local function toggleStamina()
	stamina = not stamina
	button.Text = stamina and "On" or "Off"

	local RunService = game:GetService("RunService")
	RunService.RenderStepped:Wait()

	local sprintingModule = require(game:GetService("ReplicatedStorage").Systems.Character.Game.Sprinting)

	if not sprintingModule.DefaultsSet then
		sprintingModule.Init()
	end

	if stamina then
		sprintingModule.StaminaLoss = 0
		sprintingModule.StaminaGain = 100       
		sprintingModule.MinStamina = 0           
		sprintingModule.MaxStamina = math.huge  
		sprintingModule.Stamina = math.huge 
		sprintingModule.StaminaLossDisabled = true
	else
		sprintingModule.StaminaLoss = 10
		sprintingModule.StaminaGain = 20
		sprintingModule.MinStamina = 0           
		sprintingModule.MaxStamina = 100
		sprintingModule.Stamina = 100
		sprintingModule.StaminaLossDisabled = false
	end

	if sprintingModule.__staminaChangedEvent then
		sprintingModule.__staminaChangedEvent:Fire()
	end
end

button.MouseButton1Click:Connect(toggleStamina)