Preparing your body for surgery is about more than just fasting the night before. What you do in the weeks leading up to an operation can genuinely influence how smoothly your recovery goes, and Australian research increasingly backs this up.
This approach is often called prehabilitation, and it does not need to be complicated or intense. This article breaks down what actually helps, in plain terms, covering movement, food, sleep and mental readiness, so you can walk into your operation feeling as prepared as possible.
What Is Prehabilitation?
Prehabilitation, sometimes shortened to prehab, refers to structured steps taken before surgery to improve your fitness, nutrition and overall readiness.
It is built on the idea that a stronger, healthier body can better withstand the physiological stress of surgery, with research showing that patients who take part in prehabilitation tend to experience fewer complications, less pain and faster recoveries compared to those who do not prepare in advance.
The good news is that even small, consistent changes in the weeks before your operation can make a genuine difference, even if you only have a short window to prepare.
Moving Your Body Before Surgery
Physical activity is one of the most consistently recommended parts of pre-surgery preparation.
Building Cardiovascular Fitness
Gentle aerobic activity such as walking, swimming or cycling helps improve how efficiently your body delivers oxygen, which supports you both during and after your operation. This kind of fitness gain does not need weeks of intense training to be worthwhile, even a modest improvement can help.
- Aim for around 30 minutes of moderate activity most days
- Start gradually if you are not currently very active
- Always check with your doctor before starting a new exercise routine
Strength and Breathing Exercises
Resistance exercises help maintain muscle strength needed for mobility after surgery, while breathing exercises such as diaphragmatic breathing can support lung function and reduce the risk of respiratory complications afterwards. For procedures like knee or hip replacements, physiotherapists often focus on strengthening the specific muscle groups that will need to do extra work during your recovery.
Eating Well in the Lead Up to Surgery
Nutrition plays a significant role in how well your body handles surgery and heals afterwards.
Protein needs generally increase before surgery, with research suggesting healthy adults typically require around 0.8 grams of protein per kilogram of body weight daily, rising to 1.2 to 1.5 grams for surgical patients.
- Include lean protein sources such as eggs, fish, legumes and dairy
- Eat plenty of fruit and vegetables to support immune function
- Stay well hydrated and limit processed and sugary foods
If you are unsure what changes are appropriate for you, a referral to a dietitian through your GP can help tailor advice to your specific health needs and procedure, particularly if you have existing conditions such as diabetes or a history of low iron levels.
Checking for Anaemia Beforehand
Low iron levels, or anaemia, are common before surgery and can affect how well your body copes with blood loss and healing. Your GP or surgical team may check this with a simple blood test in the weeks before your operation, and treat it if needed, since correcting anaemia ahead of time is generally more effective than addressing it afterwards.
Cutting Back on Smoking and Alcohol
This is one of the most impactful changes you can make, even if you only manage it for a short period before your operation.
Guidance on preoperative preparation notes that intensive smoking and alcohol cessation six to eight weeks before elective surgery may reduce the risk of postoperative complications, and stopping even a few days beforehand can still offer some benefit.
If quitting completely feels out of reach right now, cutting back is still worthwhile, and your GP can point you toward support services if you would like help. Nicotine replacement therapy and brief counselling from your GP have both been associated with better short-term quit rates around the time of surgery.
Looking After Your Mental Wellbeing
Physical preparation is only part of the picture. Feeling informed and supported can meaningfully ease the stress that often builds before an operation.
As one physiotherapy-based prehab guide explains, prehabilitation also involves educating patients about their procedure, recovery and any equipment they may need afterwards, which helps people feel more in control heading into surgery.
Simple relaxation techniques, staying connected with supportive people, and getting good sleep in the lead up to your operation can all support your mental readiness alongside the physical work. Sleep in particular plays a genuine role in immune function and healing, so it is worth protecting as much as possible in the final week or two before your surgery date.
Preventing Illness Before Your Operation
A cold, flu or skin infection in the days before surgery can sometimes mean your procedure needs to be postponed.
- Practise good hand hygiene in the weeks before your surgery date
- Avoid close contact with anyone who is unwell where possible
- Let your surgical team know promptly if you notice any signs of illness
This might feel like a small detail, but avoiding a preventable delay can save you the disappointment of a rescheduled operation, along with the frustration of having geared up mentally and physically only to wait longer.
Conclusion
Prepping your body for surgery does not require a complete lifestyle overhaul. Small, consistent steps around movement, nutrition, sleep, smoking and alcohol, and mental wellbeing can genuinely support a smoother recovery, even when you only have a few weeks to work with. The goal is progress, not perfection, in the time you have before your operation.
If you have surgery coming up, ask your GP or surgical team what prehabilitation steps make sense for your specific procedure. You can also explore surgery.com.au to find surgeons and specialists across major Australian cities, and to read more articles on surgical preparation and recovery.
FAQs
1. How soon before surgery should I start preparing my body?
Ideally four to eight weeks beforehand, but even small changes made in the days before your operation can still offer some benefit, so it is worth starting whenever you find out your surgery date.
2. Do I need to exercise intensely before surgery?
No. Gentle, consistent activity such as walking most days is generally more useful and sustainable than intense exercise, particularly if you are not currently very active. Always check with your doctor first, especially if you have an existing heart or lung condition.
3. Should I change my diet before surgery?
Eating a balanced diet with enough protein, fruit and vegetables can support healing and recovery, and protein needs are often slightly higher than usual around the time of surgery. A referral to a dietitian can help if you want tailored advice for your specific procedure.
4. Does quitting smoking really make a difference so close to surgery?
Yes. Even stopping a few days beforehand can offer some benefit, though six to eight weeks of cessation is generally associated with the greatest reduction in complications.
5. Can mental preparation really affect my surgery outcome?
Feeling informed and less anxious can make the overall experience more manageable, and prehabilitation programs increasingly include psychological preparation alongside physical steps for this reason.