Inf stamina open source

local Players = game:GetService("Players")
local RS = game:GetService("RunService")

local lp = Players.LocalPlayer
local playerGui = lp:WaitForChild("PlayerGui")
local sprintButton = playerGui:WaitForChild("MainUI"):WaitForChild("SprintingButton")

local anim = Instance.new("Animation")
anim.AnimationId = "rbxassetid://136252471123500"
local animTrack

local isRunning = false
local SPEED_ON = 29
local SPEED_OFF = nil

local function setupCharacter(char)
    local hum = char:WaitForChild()
    SPEED_OFF = hum.WalkSpeed
    animTrack = hum:(anim)
    animTrack.Priority = .AnimationPriority.Action


 lp.Character 
    (lp.Character)

lp.CharacterAdded:(setupCharacter)

sprintButton.Activated:(()
    isRunning =  isRunning
)

RS.RenderStepped:(()
     char = lp.Character
      char   
     hum = char:()
      hum   

     isRunning 
         hum.WalkSpeed ~= SPEED_ON 
            hum.WalkSpeed = SPEED_ON
        
         animTrack   animTrack.IsPlaying 
            animTrack:()
        
    
         hum.WalkSpeed ~= SPEED_OFF 
            hum.WalkSpeed = SPEED_OFF
        
         animTrack  animTrack.IsPlaying 
            animTrack:()
        
    
)