How to remove stamina when jumping?

So I've made a stamina script in which stamina will be decreased as you sprint, however I also want to add a feature in which that when you jump, a block of stamina will be removed. I have no clue how to incorporate it into my script and help would highly be appreciated.

local players = game:GetService("Players")
local inputService = game:GetService("UserInputService")

local player = players.LocalPlayer
local char = player.Character or player.CharacterAdded:wait()
local humanoid = char:WaitForChild("Humanoid")

local stamina = 100

local Interface = {}
do
	local playerGui = player:WaitForChild("PlayerGui")
	
	local gui = playerGui:WaitForChild("Stamina")
	local background = gui:WaitForChild("Background")
	local bar = background:WaitForChild("Bar")
	
	local UDim2_new = UDim2.new
	
	function Interface:UpdateStamina()
		bar.Size = UDim2_new(stamina/100, 0, 1, 0)
	end
end

inputService.InputBegan:connect(function(input, event)
	if (event or stamina <= 0) then return end
	
	local key = input.KeyCode.Name
	
	if (key == "LeftControl") then
		humanoid.WalkSpeed = 24
		repeat
			if (humanoid.MoveDirection.Magnitude > 0.1) then
				stamina = stamina - 1
				Interface:UpdateStamina()
			end
			wait(0)
		until not inputService:IsKeyDown(Enum.KeyCode.LeftControl) or stamina <= 0
		
		humanoid.WalkSpeed = 16
		
		if (stamina <= 0) then
			wait(2)
		else
			wait(1)
		end
		
		while (not inputService:IsKeyDown(Enum.KeyCode.LeftControl) and stamina < 100) do
			stamina = stamina + 2
			Interface:UpdateStamina()
			wait(0)
		end
	end
end)

@Dudeguy90539's answer is not correct, and does not work. This is how you do it:

humanoid.Jumping:Connect(function(isActive)
	print("Jumping: ", isActive)
	if isActive then -- lower stamina if jumping == true
		stamina = stamina - 25 -- edit this value
	end
end)

This code, when run from a LocalScript parented to a Player.Character will listen to the Humanoid’s Jumping action event and print when it is fired. If this helped you figure it out, please mark it as the answer, ty :)