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.
Softwood tree species generally have softer wood than hardwood varieties. Conifer wood contains only a few different cell types. The wood of hardwood trees has more cell types and less air spaces. Hardness can be said to be a function of the woodâs density, and hardwood trees are generally denser than softwood trees. On the other hand, there are many exceptions to this rule. For example, Southern pines are classified as softwoods and have softwood characteristics.