How would I regen a character? Not respawn but regen.

local Sand = game.Workspace:WaitForChild("Sand")
local Debounce = false
 Sand.Touched:Connect(function(hit)
    if hit.Parent:FindFirstChild("Humanoid") then
    if Debounce == false then Debounce = true
         game.ReplicatedStorage.GravityController:Destroy()
         print("Module successfully destroyed")
        end
    end
end)

if game.ReplicatedStorage.GravityController:Destroy() then
    workspace:FindFirstChild("Humanoid")  -- this is where I want to regen the character
end