Weight loss: Dr Zac Turner on best exercises to lose weight, food to avoid

Welcome to Ask Doctor Zac, a weekly column from news.com.au. This week, Dr. Zac Turner talks about the best exercises to lose weight.

Question: Hi Dr. Zac, The only way to accomplish a new year’s resolution is to do it with another person, because you can guilt trip each other if you aren’t doing anything. With this in mind, my entire family has decided 2023 is the year of being healthy!

We have decided to lose weight together, but I’m at a loss at how my teenage son can exercise with his 75-year-old grandmother. What are the best exercises for each age group? And what is the best time to work out?

This may seem like a dumb question, but what are the best exercises to lose weight? Are there foods we should be avoiding at all costs this year if we want to lose weight? – Karina, 49, NSW

Answer: Hi Karina, great question! I think accomplishing a new year’s resolution with someone, or a whole group of people, is a fantastic way of getting things done. Teamwork makes the dream work, as they say.

There’s a lot to unpack here, so I’ll break it down into bite-sized sections. There’s nothing worse than starting out and being overloaded with confusing information. You have all year to complete the resolution, so I recommend you add one thing at a time to your workout regime.

Most resolutions are abandoned in January because people go the whole hog and burn out. I will give one recommendation, that rather than losing weight you shift your aspirations to being healthy. If you adopt a healthy lifestyle, you will lose weight as a bonus.

The other big thing to remember is that starting small will lead to more. Often we think that to achieve something big we need to plan, set a date and be prepared. Whilst it is good to plan, let’s not forget that if you can make a tiny change immediately to what you’re already doing, I bet cumulatively it will have a massive impact within only a few months.

Let’s start with five great exercises to lose weight


It seems simple doesn’t it? But it’s always the first stepping stone I recommend to patients who are looking to start exercising. You can do it anywhere, with anyone, at any time. No need to spend money on equipment, and it puts limited stress on your joints. Perfect for the teenager and grandmother.


Another simple practice you can pick up which has great health benefits. It’s low-impact and nearly everyone in towns or cities has a local pool they can join.


Studies have linked this universal exercise with a reduced risk of chronic diseases. The whole family can take part. I recommend finding a cycle loop, and letting the family take their own pace.


Don’t waste your money on expensive yoga class memberships. Have your family set up an impromptu studio in the living room and chuck YouTube up on the telly. There are thousands of free yoga classes there.

weight training

I’ll be friends if I don’t put training with weights in this list. You’ll burn calories during and after the workout, while building muscle mass to improve your overall strength. Your family can vary weights according to age and strength. And yes, Nana should definitely be lifting weights as well. This will improve her mobility and preserve her independence as she ages.

Best exercises for each age group


Teenagers should first aim to build a positive body image and wellbeing. This can be achieved by the oldies setting the standard as role models, whilst also learning how to adopt healthy practices into their lifestyle.

They should aim for around 60 minutes of exercise a day, and can enjoy a variety of physical activities. This can be sports training, playing sports with friends, going for a jog or walk, or doing pushups at home.


Adults should aim for a minimum of 150 minutes of moderate exercise a week. This can be as simple as a brisk walk in the morning or cycling.

There should also be a minimum of strength training twice a week. I recommend attending an interval training session at your local gym.


Same as adults, seniors should aim for a minimum of 150 minutes of moderate exercise a week and do strength training twice a week.

They should also be improving their balance in exercise, which can include simple things such as standing on one foot.

Best time of day to exercise

I’m sorry to say, but the best time comes down to your preference. You need to find a time of day which suits you so well, you’ll stick to it. Some prefer first thing in the morning, others prefer in the afternoon. Consistency is the key for exercise.

Foods to avoid (pre-exercise)


These are filled with healthy fats but they aren’t so great right before exercising. They slow down your digestion. Before working out you want all your food digested and turned into energy to be burned. Nuts will slow down the process.


I love broccoli, but don’t recommend eating it right before working out. It’s high in raffinose, which is an indigestible carbohydrate that can trigger abdominal bloating and excessive gas.


Leave yogurt, cheese and milk for after your workout. The high fat content will make you feel tired and increase your stomach’s acid content. This will make you feel gassy and bloated.

soft drinks

Don’t be fooled by the idea that a sugar kick from a soft drink will keep you energized in a workout. The high sugar kick will make you bloated and nauseous. You’ll then enter a miserable sugar crash.

Have a think about a few things you and the family already do regularly. Write them down and let’s see what things you do regularly such as chatting on the phone or listening to music or a podcast. Now if you combine this with allocating a 20-minute walk it will be life optimizing.

We all eat and drink and we all have vices, and I’m not telling you to get rid of them. Maybe eventually, over time we can make some small alterations but tomorrow just add a carrot and a glass of water to everyone’s snack packs and see how they go.

Another tip is to have fruits and water first thing in the day which means you won’t forget and having them before lunch will keep you feeling full for longer and speed up your metabolism.

A few small 1-2 per cent changes across a few areas of your life over several months, let alone years, and you’ll start to see changes across all the family age groups.

Best of luck on your journey! I hope 2023 really is the year of being healthy for your family!

Got a question?askdrzac@conciergedoctors.com.au

Dr Zac Turner has a Bachelor of Medicine and Bachelor of Surgery from the University of Sydney. He is both a medical practitioner and a co-owner of telehealth service, Concierge Doctors. He was also a registered nurse and is a qualified and experienced biomedical scientist along with being a PhD candidate in biomedical engineering


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