Why is this script not working?

[Developer4Lifee]

How come this is not working? only the first print statement plays then nothing else no errors or all the print statements in for loop.

local part = script.Parent
local characters = {}

while true do 
	task.wait(5)
	print("Going through loop")
	for i, character in pairs(characters) do
		print(character)
		local distance = (part - character:WaitForChild("HumanoidRootPart")).Magnitude
		print(distance)
			if distance <= 10 then 
			character.Humanoid.Health += 1
			print("giving life to"..character.Name)
			else 
				character.Humanoid.Health -= 5
		end
	end
end

game.Players.PlayerAdded:Connect(function(player)
	player.CharacterAdded:Connect(function(char)
		table.insert(characters, char)
	end)
	player.CharacterRemoving:Connect(function(char)
		table.remove(characters, char)
	end)
end)

[lV0rd (Tin)]

game.Players.PlayerAdded:Connect(function(player)
	player.CharacterAdded:Connect(function(char)
		table.insert(characters, char)
	end)
	player.CharacterRemoving:Connect(function(char)
		table.remove(characters, table.find(char))
	end)
end)

also put the while loop after the events smh…