Rather than tips from plastic surgeons or influencers, we've gone to a bunch of doctors, physiotherapists, dietitians and nutritionists to get their advice on the most healthy, sustainable ways to look after ourselves.
We've heard it a million times, but the body is 75 per cent water and H2O aids every organ as we age.
Research from New Zealand's Massey University links dehydration with joint pain.Water has also been shown to reduce breast, bladder and colorectal cancer significantly, according to the Journal Of Clinical Oncology.
WATCH: A 63-year-old woman with the body of a 20-year-old shares her secrets. Story continues...
Knees-ey does it
"As we age, every extra kilogram of weight on the tummy or butt adds up to 4kg of extra force to your knees when squatting, 3kg when walking up stairs and 1.5kg of knee force when walking," says Associate Professor Nigel Hope, Orthopaedic Knee and Hip Surgeon at the University of Notre Dame Sydney.
The good news is that losing five or 10kgs often resolves knee pain without surgery.
Should the tell-tale signs of arthritis persist, such as joint pain when sitting, pain that wakes you, instability, swelling, warmth and loss of range of motion, see your GP for assessment.
When it comes to staving off "ageing" illnesses like cardiovascular disease, diabetes and Alzheimer's, the all-star diet performers are blueberries, wholegrains, oats and passionfruit, says Geraldine Georgeou, who developed the What 2 Eat program with Diabetes NSW & ACT.
Not only are blueberries and strawberries excellent low-kilojoule foods, "they are also the lowest sugar fruits and best for people trying to control diabetes," she says.
"For brain health, fish, flaxseed oil and chia seed are high in Omega 3s, which helps keep the grey matter in shape.
We know that B12 deficiency is associated with dementia, and eggs, red meat, shellfish and cheese are great sources of B12," she says.
Harvard Health has recently confirmed what we have long suspected; that you're as young as you feel.
"People who report 'feeling' younger than their chronological age have been shown to live longer," says Ben Happ.
Research also shows that people with regular social commitments have a lower risk of premature death.
A medical solution?
Did you know that an anti-ageing drug may be on the horizon?
"Drugs like Metformin, which have been used to treat diabetes for decades, may actually have a range of new life-extending benefits," says Geraldine Georgeou.
"Metformin is being assessed on 3000 elderly people with cancer, heart disease and brain disorders to see if it can help stem these diseases. One study has already found those on Metformin develop 30 per cent less cancers.
Another study on 180,000 people found that even compared to people who didn't have diabetes, the Metformin takers lived longer."