Archive for the ‘Uncategorized’ Category


Are energy drinks a good source of energy?

June 17th, 2010 by Jane

In light of recent research findings, the marketing catch phrase “Redbull gives you wings” should be changed to “Redbull can cause you to have a serious heart condition”.

The University of Adelaide, Royal Adelaide Hospital and Cardiovascular Research Centre recently published research findings that showed “common energy drinks do trigger significant changes, including a rise in blood pressure, increased stickiness of blood and decreased blood vessel function”.

So what does this mean for the average person? Well, according to Senior Research Officer Dr Scott Willoughby if you’re a fit and healthy person and you consume energy drinks, you could be putting yourself at risk of developing a serious heart condition.

It now makes perfect sense why the manufacturers of these products print on the cans “Maximum daily usage: 1 can” and advise pregnant women to steer clear of these heavily caffeinated, sugar intense products.

There have been a number of reports of healthy young individuals having heart attacks and even dying well before their time after consuming above the daily dose of these products. 28 year old Matthew Penboss from NSW is one example. After consuming 5 redbulls (4 more than the recommended daily dose) he suffered a cardiac arrest and had to take 6 weeks off work to recuperate.

The biggest problem with redbull (or any energy drink for that matter) is the amount of caffeine it contains. Imagine this – you walk into a cafe, order a large strong coffee (alternatively you buy 2 – 3 cokes) and then you consume this all at once. That’s how much caffeine you consume when you have a typical energy drink.

On top of that, you’re also consuming a ridiculous amount of sugar. For example, in a 480ml can of the popular energy drink Rock star you will find 14 teaspoons of sugar. For a visual representation of what that looks like (as well as how much sugar is in other common beverages) click here.

The combination of caffeine and sugar commonly results in nervousness, irritability, sleeplessness, etc. Sure, you’ll feel great for a time but shortly after, you will crash and burn. You’ll feel flat, grumpy and worse than you did before and you’ll feel the need to crack open another one just to get you going again.

It’s a vicious cycle and a recipe for disaster and serious heart/health problems.

So next time you’re feeling a little ‘meh’ and flat, consider ditching the energy drinks and try taking a healthier approach to boosting your energy. Often when students feel flat and tired, it’s because they have been working hard and/or haven’t had enough sleep. Your body needs rest. If you’re tired, give your body what it needs: Rest! I recommend taking a 20 minute power nap.

Perhaps sleep isn’t a problem for you and you just find yourself in a bad, unmotivated mood when it comes time to start that assignment you can’t quite get your head around. If you find yourself in this situation, then go exercise. For those of you who suffer from “lycraphobia” and don’t like going to the gym, try a 30-minute walk in nature. Research tells us that this is an excellent way to re-energise yourself, build self-esteem and clear your mind.


Boost your Brainpower with Exercise

October 16th, 2009 by Jane

exercise-smallAsk yourself this question “What are the times when you have your best ideas and work most effectively?”

For me the answer is when I exercise. Whether it be one hour of lifting weights at the gym or a couple of hours on the dance floor, I’m surprised how many great ideas come to me during and after a good workout.

There is something quite amazing about moving your body that allows you to think more clearly and work more effectively.

Scientific studies have recently found that a number of benefits are associated with engaging in strenuous exercise. According to Dr John Ratey (Associate Clinical Professor of Psychiatry at Harvard Medical School and author of Spark: The Revolutionary New Science of Exercise and the Brain) exercise helps to activate areas of the brain such that people are sharper, more attentive and less impulsive. In addition, exercise can lead to increased intelligence and lower stress levels.

Dr Ratey also stresses that by engaging in exercise you are helping to grow new brains cells, specifically in the areas of the brain associated with learning and memory (the hippocampus).

So what sort of exercise is best for your brain and will help you to learn more effectively?

Students frequently ask me “Is a 30 minute walk OK? Is that all I need to do?” A 30 minute walk will certainly help you to relax and unwind after a long day but there are much better forms of exercise that you can engage in to benefit your brain.

Dr Ratey suggests that aerobic exercise such as running, cycling and circuit training are all great ways to benefit your brain. He also suggest that by doing interval training (i.e. alternating six 30 second sprints with 60 seconds of jogging in between) two times a week can help to increase your learning ability by up to 20%!

“The more we challenge our bodies and brains, the stronger both become” he states.


What schools can do about climate change

August 7th, 2008 by Jane

Often the thought of taking action to combat climate change can be overwhelming. People frequently tell me that it’s all too hard, they feel helpless and they don’t know where to start.

If experts such as Professor Ross Garnaut and the world’s leading scientists are however correct about climate change, then the next 2 to 3 years are critical. None of us have time to waste.

No longer can we entertain such thoughts as ‘It’s too hard’ or ‘It can’t be done’. All of us need to be in action, doing whatever we can (whether it be using public transport more often, writing to politicians or turning things off at the powerpoint) to reduce our greenhouse gas emissions.

High Schools can do a great deal to reduce their greenhouse gas emissions and indeed, many of them around the world are starting to do so.

South Fremantle Senior High School is a great example of a school that is taking action and aiming to go carbon neutral. Late last year, the school set a goal of a 10% reduction in energy use by the end of June. I recently interviewed the driving force behind this school’s carbon neutral initiative (Project officer, Kathy Anketell) to find out more about the exciting project and how other schools could do the same.

Q. What made the biggest difference to getting this carbon neutral program up and running at your school?

I guess the one answer is an amazing synergy, people meeting and talking together. A germ of an idea translated into a breakfast meeting a day later, more people were invited and the energy and enthusiasm happened immediately. The Principal at the time Dominic Burgio; was the one person who had the capacity to make it happen by employing a Project Officer, but only if others also embraced it.

(I have never worked in a school before and teachers work so hard, making a commitment to going carbon neutral may be beyond teacher’s time availability, so having a Project Officer to do some of the running around really helps. Surprisingly I have become cost neutral, well sort of, in the year that I have been here grants and donations have equaled my salary).

Q. What advice would you give to other schools, students and staff members who want to do something similar at their school?

Find those who share you ideals, have breakfast, form a working group, go around the doubters, get a grant for an audit and then implement the audit suggestions. The main strength of South Fremantle Senior High School’s Carbon Neutral Project is the positive spins offs of working together for a common goal while doing lots of different things. Enjoy yourself while changing your bit of the world.

Q. What have been the biggest challenges you have faced with this initiative?

Wading through the bureaucracy, lots of good ideas get lost due people running out of time or enthusiasm as ‘the system’ stalls. Getting money to implement.

Q. Did South Fremantle high meet its 10% reduction in energy use by the end of June?

No, we have implemented 8 greenhouse reduction measures; however 2 important initiatives have not progressed as quickly as I had hoped. One is the replacement of eclectic storage hot water systems with solar HWS. This was due to the change of Federal Government, the $50,000 for all schools in Australia had the criteria expanded, however this took until July this year. The second initiative was replacing lights throughout the school; this will save 50% of our lighting consumption.

Below is a mindmap (click on it to enlarge) of all the things your school can do to decrease its emissions like South Fremantle Senior High School have done. Implementing the energy savings strategies listed on the mindmap will take a team, patience and commitment, but as Kathy said it can be an enjoyable experience with various positive spin offs.