Loin pain (lumbago)
The inferior back muscles contract due to shocks; it is a reflex to protect the backbone from harm, but at the same time it affects the blood irrigation, producing great pain.
Treatment: my grandmother recommends in such cases a hot bath with herbs – 500 g of hay flowers, macerated for 30 minutes in cold water, filter and pour in the warm water of the bathtub.
Effect: the heat is good for the (narrowed) blood vessels in the muscles, stimulating blood irrigation.
Be healthy, be natural!