Wellness In Motion

Hydration is key

For the human body, water is a vital resource. We know it is indispensible for life itself, and it provides a host of essential functions for good health. 

There is no more important nutrient in our bodies than water. It is the most widely used nutrient at work within the body’s functions and processes, as well as constituting a huge part of its
physical makeup. 


The typical man is made up of around 60% water, a woman around 50% and our brains around 75%. We can only survive a small number of days without water, yet can survive weeks without food. 

Daily water intake is extremely important in helping to replenish the water lost through our bodily processes including urination, sweating and breathing. 

When the water is not replaced, we become dehydrated: 

1 % dehydration - we become thirsty with reduced concentration (1) 

5% dehydration - we become hot and tired with decreased performance (2) (3) (4) 

10% dehydration - delirium and blurred vision (5) (6) (7) 

20% dehydration - may result in death. 

Water is a chemical compound with the chemical formula H2O. A water molecule contains one oxygen and two hydrogen atoms that are connected by covalent bonds. 


The Functions Of Water In The Body

• Transports nutrients through the body 

Once a substance is dissolved in water, water becomes vital for transporting it throughout the body. Blood - which is 83% water - transports oxygen, CO2, nutrients, waste products and more from cell to cell. Urine is also mostly water. Another very important transporter, urine removes waste products from the body. 

• Moistens eyes, mouth and nose

Water is needed for protection as well. It keeps your mouth moist and washes away dirt and grime on your eyes. Water even lubricates our joints, keeping them from getting stiff and making sure motion is smooth.

• Can help maintain pH and electrolyte balance

Our bodies must maintain a very specific pH level of 7.4. pH values of less than 6.9 or greater than 7.6 are life threatening so it is essential that we have ways to keep pH from deviating too far from normal. Water is a reactant within a very important reaction that maintains pH at 7.4. 

Water is essential to maintaining electrolyte balance within our bodies. Electrolytes are charged ions (such as Na+ or Cl- ) which must be kept at certain levels to maintain the proper amount of water in our cells. 

• Participates in many chemical reactions

As a chemical reactant, water is involved in many processes and pathways of the body. We use it to digest food in the gastrointestinal tract, to access stored energy for muscles and organs, and for countless other reactions.

• Helps maintain normal body temperature

Serves as a shock absorber inside the spinal cord and in the amniotic sac surrounding the foetus 

• Reduces chances of kidney stones

Increased water intake appears to decrease the risk of kidney stones. (8) (9) 

• May reduce cancer risk

There are some studies showing that those who drink more water have a lower risk of bladder and colorectal cancer, although other studies found no effect. (10) (11) (12) 

• May reduce constipation

Increasing water intake can help with constipation. (13) (14) 

• Ensures adequate blood volume

• Forms main components of body fluids


Properties Of Water

  • Boiling point 100 degrees Celsius
  • Freezing point 0 degrees Celsius
  • PH=7
  • Polarity = polar
  • Conducts electricity = Not in pure H2O form
  • Density at 25 degrees Celsius: 1g/cm3 


Water As A Solvent

Water is the fundamental solvent for all the biochemical processes within the body. A solvent is the dissolving medium to which a solute (the substance to be dissolved) like a solid, liquid or gas is added. Water is a very important solvent that many different molecules in our bodies dissolve in.

When a solvent dissolves a solute, it is known as solvation. Solutes that solvate in water into ions in the body are known as electrolytes. These play important roles in our bodies from nerve transmission to muscle contraction.

Molecules that can be solvated by water molecules are called hydrophilic. Molecules that do not dissolve in water are called hydrophobic.

Electrolytes are single, electrically charged particles and play an important role in maintaining water balance and acid base balance in the body.

Sodium, potassium, prosperous and chloride are examples of electrolytes – dissolved substances in blood and body fluids that carry electric charges.

The key role of electrolytes is to balance the fluids inside and outside of the cells, so they can function properly and allow body fluids to bring cells the necessary nutrients while removing waste products.

Electrolytes also help create the environment in which the cells work takes place e.g. nerve-nerve communication, heartbeats and contraction of muscles.

There is another key reason why remaining hydrated is so important. When we lose fluid from the body, we also lose electrolytes. Maintaining healthy concentrations of electrolytes is critical in supporting the important activities of the vital organs. 


Types of Water

Water enters the body via liquid and foods, and some water is created within the body itself as a by-product of metabolic processes.

There are two types of water that we typically consume. This is usually determined by its source and how it is processed. It is also based on its concentration levels of three minerals - calcium, magnesium and sodium.

• Hard water 

Is usually sourced from low level sources and is known to contain high levels of minerals, primarily calcium and magnesium.

• Soft water 

Is usually sourced from high level sources or from deep in the earth, and has a higher level of sodium. 


Sources Of Water

• Potable (drinking) water

Drinking water is safe enough to be consumed by humans or used with a low risk of immediate or long-term harm.

The majority of our drinking water in the UK is consumed from the tap, but this is also used for toilet flushing, washing and landscape gardening etc.

All of our drinking water has been ‘treated’ before use and the extent of this depends on the source of the water.

• Bottled water 

Bottled water is big business and many people are buying this because of perceived health and safety benefits, or for its improved purity and ‘taste free’ factors.

This may not be the case, as there are no existing guidelines in place to require bottled water to meet higher standards for quality, such as a maximum level of contaminants, than for public drinking water supplies.

It is suggested that anywhere between 25-40% of bottled water comes from the same municipal supplies as tap water, and has only been filtered to remove chlorine to improve taste.

It’s therefore important to understand the various sources of bottled water and how this may affect its overall quality.

• Artesian water 

Water drawn from a well that taps into a confined water-bearing rock.

• Ground water 

Water which comes from an underground source of water that does not come into any contact with surface water.

• Mineral water 

Water that is drawn from an underground source and contains at least 250 parts per million of dissolved solids. Low mineral content = 250-500 parts per million of total dissolved solids.

High mineral content = 1500+ parts per million of total dissolved solids.

• Purified water

Water from which all minerals have been removed. Also known as distilled water.

• Sparkling bottled water 

Water in which carbon dioxide is naturally present.

• Spring water 

Water derived from an underground formation from which water flows naturally to the surface of the earth.

• Well water 

Ground water derived from a rock formation. 


Water Intake

Water leaves the body through several routes - the evaporation of sweat, in the moisture of exhaled breath, in the urine and in the faeces. It is also used to facilitate all the previously mentioned functions in the body. 

This amounts equals between 1.4-2.8 litres per day.
Adults are advised to consume 1-1.5 ml of water for each calorie-expended daily.

For example: if your daily energy expenditure (BMR x activity level) is 2000kcal per day, then you would require 2-3 litres of water per day.

Water consumption throughout training should be a given, and it is suggested for every pound in bodyweight lost between the start and finish of training, 500ml of water per pound should be replaced.

When recommending daily water intake to clients, the general guidelines work very well:

• When thirsty, drink.
• When not thirsty anymore, stop.
• During high heat and exercise, drink enough to compensate for the lost fluids.


By Jojo Cole 02 May, 2024
3 tips for stress relief
By Jojo Cole 05 Apr, 2024
Sleepless Nights, Bigger Bites: The Science Behind How Sleep Influences Your Eating Habits
By Jojo Cole 27 Mar, 2024
Managing the Easter Chocolate Avalanche: A Balanced and Rad Approach!
By Jojo Cole 27 Mar, 2024
Wellness In Motion: Yoga Update
By Jojo Cole 11 Jan, 2024
WHY IS IT IMPORTANT TO HAVE HEALTHY BONES? Bones do a lot more than just keep everything in place, they are responsible for providing support and structure for your body, protecting vital organs such as the brain and heart, as well as storing essential minerals including calcium and phosphorus. On top of all that and perhaps most importantly, bones enable us to do what the human body is made to do – MOVE. Therefore, strong bones play a key role in allowing us to complete everyday functional tasks and physically engage in the things we love doing. WHAT’S MEANT BY ‘BONE HEALTH’? The health of our bones is usually measured by how dense our bones are, referred to as ‘Bone Mineral Density’ (BMD). The process of bone remodelling changes throughout our lifespan. During earlier years of life bones primarily undergo formation typically reaching peak BMD in our third decade of life.i As we age bone remodelling shifts in favour of resorption over formation which means you will lose slightly more bone mass than you gain. Bone health is then measured by comparing your BMD against the BMD norm of a healthy young adult, known as a ‘T-Score’. Maintaining bone health focuses on deviating as little as possible from this norm. HOW DOES EXERCISE PROMOTE GOOD BONE HEALTH? Exercise works on bones in a similar way to how it works on our muscles, it acts as a stimulus that encourages them to respond and adapt. To do this we need to place our bones under mechanical strain or ‘load’, in other words, subject them to a degree of impact, our own body weight or greater resistance.ii Exercise generates both external (ground-reaction and inertial) and internal (skeletal muscle) forces on our skeleton.i For instance, as we exercise our muscles push and pull our bones which stimulates the bone tissue to increase its calcium intake and get stronger. Inactivity leads to decreased bone mass. Regular exercise can help you maintain bone mass, reduce age-related bone loss and decrease your risk of developing osteoporosis. Additionally, exercise improves our muscle strength, balance, coordination and stability which are all significant at helping to reduce falls and subsequent bone fractures.iii AT WHAT AGE IS EXERCISE BEST FOR OUR BONES? The right exercises performed regularly are fundamental for supporting our bone health at all stages of our life. Exercise is important for building bone density, volume and strength when we are children and young adults and crucial for maintaining the integrity of our bones as we get older. During our earlier years exercise helps to maximise peak bone mass which in turn can reduce our risk of poor bone health later in life. While in later years exercise is crucial to slow the decline of bone loss as bone naturally becomes weaker with age. Therefore, it is vital that people of all ages engage in routine exercise for their bone health – it’s never too early or too late to take care of your bones. WHAT ARE THE BEST EXERCISES FOR OUR BONES? Whilst all movement and activity is good for our bodies and provide a wealth of benefits, our bones respond best to exercises which place them under a degree of load. With this in mind, a combination of weight-bearing impact loading exercises and muscle strengthening resistance exercises are ideal for our bones. Weight-bearing impact loading exercises include activities that place weight through the bones and typically involve moving against gravity. These include activities which are low-impact and high- impact. For most people high impact exercises are best for promoting bone health and may include running, jumping, stair climbing, dancing, and more. It’s recommended that you consult with an Exercise Physiologist before participating in these exercises to ensure they are safe for you and your individual circumstances. Muscle strengthening resistance training involves activities where you move a weight or resistance using different movement velocities and training modalities such as free weights, weight machines, medicine balls or elastic resistance bands. When performing these exercises it is beneficial to focus on the bigger muscles groups of the body including the arms, legs and trunk. High velocity, high intensity resistance training where the bone is progressively overloaded and challenged is considered most beneficial for bones in those who can tolerate it. iv v In addition, balance and mobility exercises are very important for decreasing the likelihood of experiencing falls and subsequently reducing risk of bone fractures. These exercises should be challenging and focus on strengthening the legs and trunk muscles primarily responsible for balance.vi vii HOW MUCH EXERCISE IS RECOMMENDED FOR BONE HEALTH? It’s recommended that weight-bearing exercise be performed 4 to 5 days per week for a minimum of 30 minutes. This duration can be performed in one go or over several time blocks, for instance, 3x 10 minute bouts across the day. Muscle strengthening resistance exercises can be performed 2 to 3 times per week with a focus on 8-10 exercises per session. It’s important to space these out across the week with at least 1 day rest between sessions, i.e. schedule sessions on non-consecutive days. This is to ensure our bones and muscles have adequate time to recover and adapt. Balance training can be done in conjunction with resistance sessions as part of a multi-modal exercise program. It is recommended that you first consult with an Exercise Physiologist to determine the best balance exercises for you. Want to learn more? Join us at our upcoming wellness retreat that includes expert advice from people in the industry.  Click here to learn more. Or - book a consultation with one of our team Click Here ONLINE RESOURCES https://www.bonehealth.org.au/bone-health-for-all https://healthybonesaustralia.org.au/your-bone-health/exercise-bone-health/ https://www.healthdirect.gov.au/healthy-bones https://www.jeanhailes.org.au/health-a-z/bone-health Wellness In Motion Lindfield 1 i Troy, K. L., Mancuso, M. E., Butler, T. A., & Johnson, J. E. (2018). Exercise Early and Often: Effects of Physical Activity and Exercise on Women's Bone Health. International journal of environmental research and public health, 15(5), 878. https://doi.org/10.3390/ijerph15050878 ii Hong, A. R., & Kim, S. W. (2018). Effects of Resistance Exercise on Bone Health. Endocrinology and metabolism (Seoul, Korea), 33(4), 435–444. https://doi.org/10.3803/EnM.2018.33.4.435 iii de Kam, D., Smulders, E., Weerdesteyn, V. et al. Exercise interventions to reduce fall-related fractures and their risk factors in individuals with low bone density: a systematic review of randomized controlled trials. Osteoporos Int 20, 2111–2125 (2009). https://doi.org/10.1007/s00198-009-0938-6 iv American College of Sports Medicine,, Riebe, D., Ehrman, J. K., Liguori, G., & Magal, M. (2018). ACSM's guidelines for exercise testing and prescription (Tenth edition.). Philadelphia: Wolters Kluwer. v Gianoudis, J., Bailey, C.A., Ebeling, P.R., Nowson, C.A., Sanders, K.M., Hill, K. and Daly, R.M. (2014), Effects of a Targeted Multimodal Exercise Program Incorporating High-Speed Power Training on Falls and Fracture Risk Factors in Older Adults: A Community-Based Randomized Controlled Trial. J Bone Miner Res, 29: 182-191. vi Patla, A. E., Frank, J. S., & Winter, D. A. (1992). Balance control in the elderly: implications for clinical assessment and rehabilitation. Canadian journal of public health = Revue canadienne de sante publique, 83 Suppl 2, S29–S33. vii Gillespie, L. D., Gillespie, W. J., Robertson, M. C., Lamb, S. E., Cumming, R. G., & Rowe, B. H. (2003). Interventions for preventing falls in elderly people. The Cochrane database of systematic reviews, (4), CD000340. https://doi.org/10.1002/14651858.CD000340
By Jason Kim 03 Nov, 2023
A Holistic Approach to Chronic Pain Management: Exercise and the Biopsychosocial Model
By Jason Kim 01 Nov, 2023
Managing Knee Osteoarthritis with Exercise Physiology: A Path to Pain Relief
By Jojo Cole 18 Oct, 2023
SEVEN WAYS TO OPTIMIZE YOUR EATING
By Jojo Cole 13 Oct, 2023
Managing diabetes with exercise.
By jojocoleaka 19 May, 2023
The theory behind getting results - supercompensation theory Supercompensation Theory: one of the exercise science principles we uterlise at wellness.
More Posts
Share by: