Theories of love are diverse and difficult to classify. Some are reductionist, while others are more complex. Many do not show any relational connections between various aspects of love. This is the main reason that they are difficult to categorize. Some do include elements that may be central to another type. Some of these theories […]

There are many different types of sleep. Rapid eye movement (REM) sleep is one type. This stage of sleep has many similarities to drowsiness, but is distinct from it in that it involves rapid fluctuations in bodily activity. The REM stage is considered to be the most dreamlike state. The brain is able to tune […]