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.
Of these vitamins, the B vitamins are best studied. While some studies found that certain vitamins may help improve the quality of sleep, other studies found that certain vitamin combinations can promote insomnia. Generally, there are 2 ways that B vitamins may affect sleep. First, some B vitamins are needed for the syntheses and release of certain neurotransmitters and neurohormones that are involved in the regulation of sleep and the circadian cycle. For example, studies show that certain B vitamins are used as cofactors in the enzymatic synthesis of serotonin (a neurotransmitter).