There are several theories but the two that seem to stick are that sleep: allows your body to replenish energy stores and repair itself. gives you the chance to save energy. Sleep may also aid learning and give our bodies time to organise all the memories of the hundreds of events we experience every day.
Softwood is also used in the production of paper, and for various types of board such as MDF (medium-density fiberboard). The finer softwoods have many special uses. they are used for making window frames,doors,frames,t.v. stands,flooring and beds.
Since the Softwood Lumber Agreement with Canada expired in October 2015, the U.S. Lumber Coalition has been working hard to support negotiations between the two nations aimed at designing an effective framework for offsetting trade distortions and job losses in the U.S. market caused by unfairly priced Canadian imports.