Friday, August 29, 2008

Migrating Birds take Powernaps


Many people find that taking a fifteen minute powernap during the day can help improve their productivity and maintain their energy level. As it turns out, animals also use powernaps to keep them on their migratory schedule.
A recent study published in the journal Animal Behavior found that birds take hundreds of powernaps all day long, each one lasting an average of just nine seconds. This information helps explain the mystery of how birds are able to fly for many long hours during their migration with little time for rest.
The team of scientists from the Bowling Green State University in Ohio studied Swainson's thrushes, which fly up to 3,000 miles from Canada and Alaska to Central and South America each autumn, only to return north in the spring. The birds fly mostly at night and rest during the day. Scientists observed caged thrushes for a year and recorded their sleep patterns and found that during their migratory seasons, they reverse their sleep patterns to stay awake at night.
The thrushes were found to take two types of powernaps, which the scientists termed "unilateral eye closure," during which the birds rest one eye and one half of their brain while the opposite eye and side of the brain remain awake and alert; and "drowsiness," in which the eyes are partially shut but some visual processing is still performed.
If you co-sleep with your baby, this type of semi-consciousness may sound very familiar to you. Many new mothers claim they remain completely aware of their surroundings when they are sleeping with their child nearby. These mothers say that, particularly while co-sleeping, they can sense the child's presence and hear any noises that might alert them to a problem. While they are able to get some sleep, their senses remain awake all night.

Friday, August 22, 2008

Spinal Breathing


Find a wall or flat surface to provide back support during this advanced pranayama technique.
Close your eyes and your mouth. Slowly and gently inhale and exhale through your nose. The breath should be deep but not forced and should fill your abdomen up through your chest to the top of your collar bone, before retreating during the exhale. Slowly repeat this a few times.
As you inhale, focus your attention and imagine there is a tiny tube or cord that originates at your perineum and stretches up through your spine to the stem of your brain and terminates at the center of your head. Once your attention reaches your head, imagine a tiny nerve turns forward to reach the point between your eyebrows.
With each slow inhale, imagine energy funneling up from your perineum up to the point between your eyebrows and then back down again to your perineum. Repeat this with each breath.
This exercise should be done for a few minutes before meditation. Remain seated when you are finished with the exercise and begin meditation immediately.

Friday, August 1, 2008

Lotus Pose (Padmasana)


The Lotus Pose is said to have been routinely used by Buddha and is a popular meditation pose. It may be uncomfortable at first until your ligaments extend. It's a common misconception that meditation should be done in the Lotus Pose, so if it is too difficult, any other seated pose will work well. This is one of the basic yoga postures, so take your time becoming comfortable in it.
How to do it
Bring your right foot onto your left thigh. Bounce the right knee and, if it touches the floor with ease, bend your left knee and grab your left foot with both hands and place it on your right thigh. Your hands should rest on your knees, either open or forming a mudra.

Friday, July 18, 2008

Kapalabhati



Kapalabhati is a cleansing breath that literally translates as "skull that brings lightness." Use it to clear a foggy or heavy head or when you have mucus buildup in your air passages and tension or blockages in your chest. It can also help with sinus issues, such as numbness around the eyes.
During this breathing exercise, the breath is deliberately sped up using only diaphragmatic (abdominal) breathing. Each breath is short, rapid and strong as the lungs act as a pump to expel air from the lungs and remove waste from the air passages.
It is important to do this exercise carefully while sitting. If you are pregnant, skip the breath retention step, as holding your breath can harm your baby. This exercise may create tension in the breath and cause dizziness, so always end your practice with some deep, slow breaths.
One Repetition:
Begin by breathing normally twice. Inhale, and then exhale while pulling in your diaphragm. Repeat this 20 times, maintaining a steady rhythm and emphasizing the exhale each time. Follow this by inhaling and exhaling completely. Now, inhale and hold your breath for as long as is comfortable (skip this step if you are pregnant). Slowly exhale.

Friday, July 11, 2008

Primate Dads Gain Sympathy Weight


Between 11 and 65 percent of all human dads-to-be experience sympathy symptoms when their partners are pregnant, including weight gain, nausea, headaches, irritability, backaches, and hormonal changes. Now a new study has found that males in at least two species of primates also experience physiologic changes when their mates are expecting.
Researchers at the University of Wisconsin, Madison, observed that two types of primates, the common marmoset (Callithrix jacchus) and cotton-top tamarin (Saguinus oedipus) - both known for their monogamous partnerships and good parenting - gained roughly 10 percent more weight when their mates were pregnant. And scientists believe they're not alone; it is estimated that males in most monogamous primate species - including gibbons, some lemur species, and humans - experience such sympathy symptoms.
During the study, researchers weighed 29 male marmosets and 29 male cotton-top tamarins monthly. Of these, 9 marmosets and 11 tamarins had pregnant mates. The scientists found that the males increased their total weight by approximately 10 percent gradually over the course of their mate's pregnancy (five months for marmosets and about six months for tamarins). The researchers also determined that the added weight was not because the males copied their mates' eating habits.
Scientists believe that the primates are so in tune with their mates that they pick up subtle clues about their fertility. According to Toni Ziegler, a senior scientist at the University of Wisconsin, Madison and lead author of the study, "They…detect when their mate is going to ovulate and have an increase in testosterone a few days before she ovulates, so I think they are getting signals from the female at important reproductive events." The researchers observed elevated estrogen and testosterone levels in the males, as well as the lactation-inducing hormone prolactin which they believe is most likely the cause of the weight gain.
These pregnancy symptoms were previously thought to be psychosomatic, but scientists now believe that these changes may actually help the male primates to prepare for fatherhood and deal with the added stress once the baby is born. "Males do most of the carrying of infants - usually two - once they are born," said Zigler, adding, "The males invest highly in infant care, even losing weight while carrying these heavy, multiple infants through the trees."
These findings are giving scientists a window into the driving force behind fatherhood - primate and human. "We're interested in what motivates dads to be good parents because there are so many men who just aren't good fathers," says Ziegler. "This work could help to tease apart what makes a good dad."

Learn more:
http://www.parentingweekly.com/pregnancy/breathingspace/vol09/pregnancy_health_fitness.asp

Friday, June 27, 2008

Food for Good Health


Many common grains and nuts are full of beneficial vitamins, minerals, and nutrients that are especially important for you and your baby during pregnancy and can help relieve many unpleasant pregnancy symptoms. So try adding the following foods to your diet for better health. (Always talk to your doctor before adding anything unusual to your diet while you are pregnant.)
Walnuts
Walnuts not only improve the flavor of salads, soups and entrees, they are also highly nutritious and even medicinal. Raw walnuts are loaded with vitamin E and antioxidants, as well as folic acid, iron, magnesium, potassium, zinc and omega 3 fatty acids. They are also are an important source of monounsaturated fats and pack a lot of protein and vitamins B1, B2, B3, B5, and B6 inside that little shell. They also help to lower levels of LDL cholesterol in the bloodstream, and have been used to calm hysteria and reduce morning sickness. Because they provide many of the elements that the body requires but cannot manufacture, walnuts are considered an essential food to include in a healthy diet.
Flax Seed
Mixing 1 to 2 tablespoons of flaxseed or ground flaxseed powder into foods up to three times per day is a gentle way to treat constipation. Flaxseeds contain essential fatty acids and DHA (docosahexanoic acid), which are important for fetal and infant brain development.
Almonds
Chewing on raw almonds and swallowing the liquid can relieve heartburn. They also provide a nutritious snack packed with dietary fiber, protein, more vitamin A and E than any other nut, and the most powerful and absorbable form of vitamin E. Not least of all, almonds are cholesterol free!
Alfalfa
Because of its deep root system, alfalfa is a great source of protein and important nutrients such as vitamins K and C, calcium, iron, phosphorus, and chlorophyll. Research suggests that it may remove from your liver and small intestines chemical carcinogens found in food before they have a chance to do your body any harm. Alfalfa is also effective as a digestive stimulant and may help ease morning sickness, as well as fatigue and muscle tenderness when used directly on the skin or added to a bath. Although it has a flavor that may not appeal to everyone, it is safe to eat in moderation throughout pregnancy; however, many alfalfa extracts contain high amounts of alcohol and should be avoided during pregnancy. Alfalfa may be particularly beneficial in late pregnancy because the vitamin K it contains promotes blood clotting, which reduces the risk of postpartum hemorrhage.
Bran
The National Cancer Institute recommends eating 20 to 35 grams of fiber daily, yet the typical American diet contains only 7 to 8. Eating a fiber-rich diet is especially important during pregnancy because it can help prevent and treat two common pregnancy conditions: constipation and gestational diabetes. One of the best ways to get enough fiber in your diet is to consume bran and bran products every day. Wheat bran is a good source of insoluble fiber, which can relieve constipation; while oat bran is a good source of soluble fiber. Soluble fiber breaks down as it passes though the digestive tract, forming a gel that traps and removes cholesterol, which may decrease your risk of heart disease.
Dandelion Root and Leaves
Dandelion root and leaves (taraxacum officinale) traditionally have been used to alleviate nausea, calm an upset stomach, and gently promote bowel movements. Dandelion greens are also considered to be highly nutritious, containing more beta-carotene than carrots and more iron and calcium than spinach. They are also a great source of vitamins B 1,2,5, 6 and 12; vitamin C, E, and D; biotin and inositol (promotes the health of cell membranes); potassium; phosphorus; magnesium and zinc. In addition, the dandelion root promotes the flow of bile, reduces inflammation of the bile duct, helps eliminate gallstones, reduces liver swelling, and serves as a gentle diuretic that aids kidney function.

Friday, June 20, 2008

Brooding Squid Discovered


The mothering instinct is inherent in many animals, but completely absent in others. For instance, humans care for their children for 18 (or more!) years, while the giant tortoise lays her eggs on a moonlit beach and then abandons her progeny to make their own way in their watery world. Scientists have always considered the squid to be a follower of the latter style of parenting; however, deep-sea explorers were recently surprised to discover a female squid caring for a large sac of eggs.
This protective behavior was demonstrated by the female Gonatus onyx squid, a common species found in surface waters, and was caught on tape by marine biologist Brad Seibel of the University of Rhode Island and his colleagues. The video evidence of the squid puts to rest a long controversy, said squid expert Eric Hochberg of the Santa Barbara Museum of Natural History in California. Hochberg was part of a team of researchers that proposed the existence of brooding squid five years ago based on the retrieval of a trawl bucket in 1996 that contained a relatively small number of extraordinarily large eggs along with an adult Gonatus onyx squid. "We just always had assumed that octopuses carry eggs and squids lay them on the bottom," said Hochberg. But the discovery of the Gonatus onyx changes these previous assumptions and, according to Hochberg, "there may be other deep-sea squids that are carrying their eggs."
These particular squids care for their precious cargo between 5,000 and 7,000 feet below the surface off California's central coast, just above the inky abyss of the Monterey Canyon. Because surface waters and the ocean floor are considered the two most productive depths for marine life, this middle-depth location may explain why the squid's parenting behavior was not observed until now. According to Siebel, "Researchers tend to skip this zone." The squids are probably brooding in this area to hide from predatory whales and seals, which also tend to ignore the middle depths while hunting.
Most squids lay 10,000 to 100,000 small eggs and leave them on the ocean floor where only a few survive to adulthood. But by watching over their eggs for six to nine months until they hatch, the newly discovered brooding squid enhances the survival odds of each egg, thereby allowing them to lay fewer and larger eggs.
The female Gonatus onyx carries approximately two to three thousand eggs in an open-ended sac she holds with hooks in her arms and keeps oxygen flowing to the eggs by circulating water through the sac. But after the eggs are ready to hatch, the mother probably dies, said Seibel. "Most squids lay eggs and die in one season," said Seibel. Because the egg sac blocks the squid's mouth, it's very difficult to eat with it and there's no evidence she can release it to feed and then pick it up again. Scientists have compared squids that are carrying freshly laid eggs to those holding older eggs that are ready to hatch. The squids with mature eggs are physically wasted and ready to die, whereas those with younger eggs look much healthier. The female squids accumulate fat stores while they grow and then expend it during the brooding period, which may last up to nine months. Scientists theorize that the squids' metabolism slows considerably during brooding to conserve energy and that prolonged muscle degeneration gradually provides increased buoyancy to support the eggs. They also believe the high lipid content of the females' digestive gland provides the fuel necessary to survive the brooding period.
This discovery is a prime example of how an important food source for shallow-water species and birds can also require deep waters for its survival. For this reason, Siebel says, it's important for people to think twice before signing on to any disposal project or other plans that can pollute deep ocean waters.
Click here to watch a video of a squid carrying a tubular pouch of thousands of eggs.