Warming Socks "Time-tested" Treatment - For congestion or infection in upper head

What is this extremely effective simple treatment used for?

Congestion or infection in upper body / head. E.g. Colds, Headaches, Sore Throats, Ear Infections, Some Insomnia cases

General immune stimulation (when used on a regular basis).

You must warm your feet first before you begin this treatment –otherwise treatment will not be as effective and could be harmful. Soak in warm water for 5 minutes.
Take a pair of cotton socks and wet the portion covering the feet with cold water – wring the socks out so they are damp, but not dripping.
Place the cold socks on your feet – cover these with thick wool socks. Go to bed wrapped up well with a warm blanket. Avoid getting chilled.
DO NOT remove socks in the middle of the night – it will ruin the effectiveness of the treatment. Your socks will be dry in the morning. Many report that they sleep much better during this treatment.