How to make a player have god mode without changing the hp and visual looks?

Im currently using this way of making the player undamageable, but i dont want to change the Players hp or do anything that visually stands out, any help?

humanoid.MaxHealth = math.huge
humanoid.Health = math.huge

humanoid.MaxHealth = "sub to creeper movie12"

If you want the player to be invincible (god mode) add this script into the humanoid:

while wait() do
     script.Parent.Health = script.Parent.MaxHealth
end

Make sure that script is disabled. In another script, have a way to toggle it. For demonstration perposes, I'll use a part that, when it's touched, toggles god mode

script.Parent.Touched:Connect(function(hit)
     if hit.Parent:FindFirstChild("Humanoid") then
          local hum = hit.Parent:FindFirstChild("Humanoid")
          if hum:FindFirstChild("GodModeScript") then
               local god = hum:FindFirstChild("GodModeScript")
               if god.Disabled == true then
                    god.Disbaled = false
               elseif god.Disabled == false then
                    god.Disabled = true
               end
          end
     end
end)