There are many different types of diaries. Here are some of them:
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Travel Diaries, aka Road Diaries or Travelogues
Travel diaries include many records made by voyagers. Generally speaking, these diaries are centered specifically around the courses of where a person has traveled, usually including experiences that occurred along the way.
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Food Diaries, aka Diet Diaries
This type of diary is basically a daily record of all the types of foods and drinks consumed by a person, usually in order to estimate calorie consumption; while tracking calorie consumption, a person can see how far he has come in his weight loss struggles.
Workout Diaries, aka Exercise Diaries
Workout diaries are the type of journals where one explains the exercise he has recently done, including the duration of the workout, and possibly other information, such as how many calories he believes he has burned, or how he felt after the workout.
Sleep Diaries
A sleep diary is a log of a person's time spent sleeping and waking, possibly including other information, usually done over a period of many weeks. Generally, sleep diaries are kept by a patient, having been given by a doctor, psychologist, counselor, etc. Ideally, they are used for diagnosing people with a sleep disorder, like narcolepsy or insomnia.
Audio Diaries
Audio diaries utilize spoken words, not written words. Many people use tape recorders or voice recorders to talk about parts of their lives that are most fascinating, with each event progressing to the current situation.
Tagebuch
German Tagebuchs are basically just diaries, although they could include workbooks or journals as well.
Personal writing diaries
In these diaries, people can write about their thoughts about anything they want. For example, someone may write about a crush he has on a girl.
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Creative Writing Diary
Creative writing diaries are used to record stories, poems, lyrics to songs, or drawings. Often times, for example, people get thoughts that come to mind spontaneously, and they record them in these types of diaries.
Memory Diary
Memory diaries allow people to place precious photos, log details about their thoughts, behaviors, and emotions for events that are most important to their lives. The topics that are put into this diary are things that will want to be explored in the future.
Prayer Diary
A prayer journal diary is something that holds a person's thoughts and feelings concerning life, with the hopes that a greater being (i.e., "God") will look at it.
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