How to make it so that a loop executes every so seconds and doesn't wait for previous loop?

I'm trying this loop that executes a function that makes a brick invisible

local parts = script.Parent:GetChildren()


local function blink(part)
	if part:IsA("BasePart") then
		for transparency = 0, 1, 0.2 do
			part.Transparency = part.Transparency + 0.2
			if part.Transparency == 1 then
				part.CanCollide = false
				wait(2)
				part.Transparency = 0
				part.CanCollide = true
				break
			end
			wait(1)
		end
	end
end

while true do
	for i, v in ipairs(parts) do
		blink(v)
	end
end

It does go through every child in parts but it only works on one brick each time. I would like to know how to make a brick start turning invisible every so seconds instead of having it wait until the part is done executing the function

You will have to use coroutines

Info On Coroutine n' Examples