1 Illnesses such as the flu or colds. 2  Home treatment of your flu and cold symptoms usually will relieve lightheadedness. 3  Vomiting, diarrhea, fevers, and other illnesses that cause dehydration. 4  Very deep or rapid breathing (hyperventilation). 5  Anxiety and stress. 6  The use of tobacco, alcohol, or illegal drugs.
Economical in the use or appropriation of resources; not wasteful or lavish; wise in the expenditure or application of force, materials, time, etc .; characterized by frugality; sparing; economical; saving; as, a frugal housekeeper; frugal of time. I oft admire.
noun, plural economies. 1. thrifty management; frugality in the expenditure or consumption of money, materials, etc. 2. an act or means of thrifty saving; a saving: He achieved a small economy by walking to work instead of taking a bus. 3. the management of the resources of a community, country, etc., especially with a view to its productivity.