I'm no longer the youngest, but physically and mentally I can tackle big projects. Nevertheless, I have learnt to respect and accept the hurdles of age.
The preparations are very different from my younger years. I used to practise taekwondo competitively and I was in top shape then. Today, I have to learn to deal with physical limitations. I realise that I'm no longer as flexible as I used to be. Targeted training is essential.
Cardio training, mainly running, strengthens my stamina and trains my balance. Both are crucial on a boat. Another important point: nutrition. The body regenerates more slowly with age, so I make sure I eat a balanced diet. Targeted abdominal muscle building is just as essential to prevent back problems.
Being prepared for medical emergencies is extremely important to me. When I was younger, I hardly ever thought about health risks. Today it's different. Before I go out to sea, I test all the necessary medication for compatibility.
My ship's first-aid kit is well stocked. It contains everything for emergencies - from simple aches and pains to more serious problems such as back pain. I liaise closely with my doctor about this. When the body sends signals that something is wrong, you have to react flexibly. Food supplements play a major role here.
It's about keeping the body - which wears out over time - functional with the right care, maintenance and the optimum "fuels" and "lubricants". Nothing is too much trouble. Some people in old age believe that if they refuse to see a doctor or take medication, they won't be ill - or will stay young forever. All I can say is: if I had done that, I would probably have been dead for at least four years.
It sounds banal, but eyesight deteriorates with age. That's why I not only have documents in larger print, but also reading glasses everywhere.
Absolutely important, and not just because of the sailing holidays. I drew up a will as early as my first circumnavigation. There was no need to do this for the last 20 years with Marion, we had planned everything together. After we separated, I updated it again.
Given the risks, it's wise to keep things in order. How I want to organise my inheritance is still open. But before I leave, I'll definitely draw up a new will - that way I'll avoid stress and uncertainty for the people who are important to me.
For me, self-discipline is the key to everything. You have to stay on the ball, otherwise things will fall apart again. Even on days when you don't feel much energy, do something - but then do less. It's important to know your own limits and still stay active on a regular basis.
Whether through sport, a healthy diet or mental challenges: all of these help to keep you fit and happy.
As you get older, you must not stop looking after your body and mind.
You have to pay attention, take signs seriously and act accordingly. Especially in old age, it is important to find the right level of activity without overexerting yourself.
I plan to take my final exams on 26 July 2026. A lot of preparation has gone into this journey and I'm looking forward to tackling all the challenges that now await me.
More about Norbert Sedlacek and his Ant Arctic Lab read here.

Editor News & Panorama