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Food quality and quantity
The quality and quantity of food you choose can make a huge difference to body weight. The difference between the two diets on the right is 5700kJ. Someone that eats 5700kJ more than another person will weigh 56 kilograms heavier or would have to walk 5 hours each day to burn this amount of energy……
Mood & physical activity
Think about the last time you took a brisk walk. How did you feel afterwards? I bet you felt good! You don’t have to wait for the good feeling physical activity brings. It starts right away – and then gets better. Studies have shown that regular physical activity reduces stress-related symptoms and decreases the risk……
Building fatigue resilient workplaces
Imagine being able to do everything in your working and personal life without thinking: “I don’t have the energy to do this”? The good news is that you can take steps to be more fatigue resistant…most of the time.Building fatigue resistance is like completing a puzzle each day. Think for a minute what makes completing……
What can you do to manage fatigue?
Taking action against fatigue happens in two forms: 1) the action you take when you experience fatigue; and 2) the action you take to prevent fatigue and therefore become more fatigue resistant. Figure 1 below summarises the causes of fatigue and identifies the areas that need to be focused on to build fatigue resistance. Although……
An introduction to sleep
Sleep is common throughout the animal kingdom. We do know there is still a lot to be leaned about sleep, despite considerable research. All animals require sleep and no permanent non sleeping species exists. Even plants and bacteria have a regular period of rest and inactivity. Humans spend one-third of their lives sleeping. Far from……
How sleep works
Good sleep helps us wake up feeling refreshed and alert for our daily activities. Sleep affects how we look, feel and perform on a daily basis. If sleep is cut short, the body doesn’t have time to complete all of the phases, which can leave us feeling drowsy, tired and fatigued. IMPORTANTExperts have warned that……
How much sleep do you need?
The amount of sleep that people require varies between individuals depending on many factors. Age is a major determinant of the quantity of sleep. The table below provides a general guide to the number of hours sleep needed through the stages of life. Children generally require more hours of sleep each day, while for most……
Dreaming
There are many theories about dreams including how they occur and what they may mean, if anything. Dreams may not serve any purpose at all and may be merely a by-product of two evolutionary adaptations – sleep and consciousness. The question about the function of dreaming is still unanswered. Dreams often involve the dreamer in……
Sleep debt
Sleep debt is the cumulative effect of not getting enough sleep. Two kinds of sleep debt have been proposed: 1) partial sleep deprivation; or 2) total sleep deprivation. Partial sleep deprivation occurs when a person gets inadequate sleep for many days or weeks. Total sleep deprivation occurs when a person is kept awake for days……
When should I sleep?
Our levels of alertness and attention are influenced by our circadian rhythms, as shown in the figure below. Circadian rhythms allow us to feel more alert during the day and less alert during the evening. This is the primary reason it is difficult to stay awake at night and why we may struggle to sleep……
What is fatigue?
Fatigue is not a condition, but rather a symptom of many different situations, illnesses or conditions and can be defined quite simply as a feeling of weariness, tiredness, or lack of energy. The presentation of fatigue can be unpredictable and its causes diverse, making its management difficult. One thing is for sure: that each and……
Napping
Effective napping is a skill, which cannot be achieved by everyone. Napping cannot replace sleep, but can assist in times of sleep debt, extreme tiredness and/or when heightened alertness is required for your safety, such as driving a car. Naps may improve subsequent performance and alertness for a period of time, ranging from 2 to……