Tigers DO live in the 'jungle', so are harder to find. In the wild, the two do not meet, so there was always a question as to who was the stronger. The lion LOOKED bigger, so was assumed to be stronger, but lions and tigers have different muscle structure, since lions run more in life, and tigers climb more.
Sleep Hygiene The most common cause of insomnia is a change in your daily routine. For example, traveling, change in work hours, disruption of other behaviors (eating, exercise, leisure, etc.), and relationship conflicts can all cause sleep problems. Paying attention to good sleep hygiene is the most important thing you can do to maintain good sleep.
Classification and Description of Sleep Disorders Extrinsic sleep disorders These disorders are those that originate outside the body. These can be caused by environmental or behavioral factors. 1. Inadequate sleep hygiene People with this disorder have habits that aren't compatible with good sleep or maximum daytime alertness. Caffeine or other drugs near bedtime, or stressful activities before bed, are common problems of sleep hygiene.