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.
Softwood plyÂ­wood has a different system of ratings. Itâs rated according to its face veneer (the outermost plies) and should be rated B or better. Used as a core material for kitchen cabinets, softwood plywood can be covered with a plastic lamÂ­inate or wood-veneer face.