The big three: Optimizing exercise, diet and sleep for overall wellness

by Cheryl Dizon-Reynante

With summer over and the busyness of the fall season revving up, you might be noticing that it is harder to get regular physical activity. When the weather gets cooler, some people find that they are moving less and eating more. Fall can mean more responsibilities with work and school and less time for hobbies, recreational activities and having fun. Hence, stress levels can increase, and sleep becomes disrupted.

If you’re feeling overwhelmed, have low motivation, or are just feeling “off” this season, read ahead to find out what could be going on for you. Learn about strategies and tips for getting back on track!

The three pillars of health: exercise, diet & sleep

When people talk about being “healthy,” they almost always mention exercise, a healthy diet, and rest. But these aren’t just vague ideas to think about. They are very important components that support nearly every aspect of our physical and mental health.

Exercise: More than just “looking better”

Regular physical activity is about much more than just losing weight or building muscle. The Heart & Stroke Foundation recommends that adults ages 18 to 64 should get at least 150 minutes of moderate to vigorous intensity aerobic physical activity per week. It does not have to be all at once but can be broken up into time periods of 10 minutes or more. It is also beneficial to add muscle and bone strengthening activities using major muscle groups, at least two days per week. Here are other key benefits:

• Improves cardiovascular health: Exercise strengthens the heart and improves circulation, lowering blood pressure, improving cholesterol levels, and reducing risk of heart disease and stroke
• Boosts mood and mental health: Physical activity triggers the release of endorphins and other “feel‐good” chemicals in the brain. It can reduce symptoms of anxiety and depression, help regulate stress, and improve overall emotional wellbeing.
• Supports strong muscles, bones, balance: Resistance training (weights, body‐weight work), aerobic exercise, and flexibility/balance routines (such as yoga) counter the loss of muscle mass and bone density, especially as we age.
• Enhances cognitive function: Many adults find that they experience brain fog as they get older. Regular movement improves memory, attention, and overall brain health. Some studies suggest that exercise helps reduce risk of cognitive decline.

Diet: Fuelling the body and mind

What you eat – and when you eat – has profound effects not just on body composition, but on energy levels, mood, recovery, and how well the other two pillars (exercise & sleep) work.

• Reduces risk of chronic diseases: A balanced diet rich in vegetables, fruits, lean proteins, healthy fats, whole grains etc. helps protect against obesity, type 2 diabetes, cardiovascular disease and some cancers.
• Supports recovery and performance: After exercise, nutrients (especially protein) help repair muscle damage, replenish energy stores, and reduce fatigue. Carbohydrates and protein timing can influence workout performance and recovery.
• Impacts sleep quality: What and when you eat can make a difference. For example, high evening caffeine intake reduces sleep duration and quality. Conversely, certain types of carbohydrates (especially high‐glycemic ones) or protein high in tryptophan, eaten with appropriate timing, may help some people fall asleep faster at night.
• Regulates weight via appetite, hormones: Diet interacts with hormones that control hunger and satiety. Poor diet choices, overeating, or irregular meals can disrupt these signals, which can lead to weight gain. A healthy diet supports better regulation of appetite. Sleep plays a role here too!

Adequate sleep: The restoration phase

While exercise is often viewed as “giving” (putting in effort) and diet as “fuel”, sleep is the time when your body and brain restore, repair, and reset.

• Physical recovery: Sleep is when muscle tissues repair, growth hormones are released, immune function is supported. Without sufficient sleep, recovery from exercise is impaired, which may increase risk of injury or reduce fitness gains.
• Hormonal balance & weight control: Sleep influences hormones, so when sleep is insufficient, this might alter our hormone levels. This can lead to feeling hungrier and eating more. Also, when we feel rushed or under pressure, we can make poor meal choices.
• Improved adherence and energy: When you sleep well, you’re more likely to have the energy, motivation, and mental clarity to stick to healthy eating and to do regular exercise. Poor sleep makes everything harder. For example, a study showed that people with better sleep health during a weight loss program were more likely to adhere to the diet and activity targets.

Strategies and tips

Here are some general tips to maximize overall wellness through exercise, diet, and sleep:

1. Routine is key

• Regular moderate exercise (e.g. 150 minutes/week) can be more achievable, rather than sporadic, intense bursts.
• Consistent sleep schedule: going to bed and waking up at roughly the same time every day helps to naturally regulate your internal clock.
• Balanced meals spaced out throughout the day.

2. Time things smartly

• Avoid heavy, spicy or large meals too close to bedtime; give your body time to digest.
• Be careful with caffeine in the afternoon or evening.
• If possible, schedule exercise earlier in the day; avoid very intense workouts right before bed.

3. Make diet nourishing and varied

• Prioritize whole foods: fruits, vegetables, lean proteins, healthy fats, whole grains.
• Include foods that support sleep, such as those rich in tryptophan, or nutrients like magnesium and certain vitamins. These can include nuts, milk, lean proteins, and leafy greens.
• Avoid processed sugar, excessive fat, or very high‐glycemic foods late at night.

4. Protect your sleep hygiene

• Create a dark, quiet, cool sleep environment.
• Limit screen time before bed; blue light from phones or computers can interfere with melatonin.
• Wind down: relax, de‐stress. Gentle stretching, a warm bath, reading, or calming activities, can help.
• If you cannot fall asleep, get out of bed and go somewhere else in the home that is quiet. We want to avoid associating the bed with being wide awake.

Adequate exercise, diet, and sleep are pillars of health that are connected and can influence each other. By prioritizing all three—moving regularly, nourishing your body, and giving yourself enough quality rest—you set up a foundation for physical strength, mental clarity, emotional stability, longevity, and resilience.

Establishing good habits with each is not as difficult as you might think! Set goals and be kind and patient with yourself. It’s not about perfection – it’s about making balanced and consistent choices more often than not!

Cheryl Dizon-Reynante is a licensed therapist with the Canadian Counselling and Psychotherapy Association.

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