You pass through different phases of sleep in regular cycles during the night. The two main phases are: rapid eye movement (REM) sleep. non-rapid eye movement (non-REM) sleep. You move through stages of non-REM sleep then into REM sleep and back again. Each full cycle takes about one to two hours.
Softwood. Softwood is used to describe wood from trees that are known as gymnosperms. Conifers are an example. It may also be used to describe trees, which tend to be evergreen, notable exceptions being bald cypress and the larches.oftwood. Softwood is used to describe wood from trees that are known as gymnosperms. Conifers are an example. It may also be used to describe trees, which tend to be evergreen, notable exceptions being bald cypress and the larches.
Conifers produce wood which is termed 'softwood'. It is used for a huge range of products from pine furniture to paper. Coniferous woodlands in Britain are dominated by non-native species of conifers such as Douglas Fir (left), which have been imported to improve yields.onifers produce wood which is termed 'softwood'. It is used for a huge range of products from pine furniture to paper. Coniferous woodlands in Britain are dominated by non-native species of conifers such as Douglas Fir (left), which have been imported to improve yields.