Earlier today I fired the starter's gun at the third annual City Mile Dash.
More than 1,500 Sydneysiders took part in the 1.6km challenge along the foreshore at Barangaroo, raising money for Cancer Council NSW.
Individual competitors and people running in teams in this year's Dash have raised more than $135,000 dollars to support the Cancer Council's work on testicular and ovarian cancer.
This is a great effort which will have a real impact on those suffering from cancer. It's not too late to sponsor someone or make a donation.
Incredibly, nearly half of all Australians will be diagnosed with some form of cancer during their life time. Around 106,000 Australians are expected to be diagnosed with cancer this year.
An active and healthy lifestyle can help prevent cancer, yet Australia has one of the highest rates of obesity in the OECD.
I hope that this event will inspire people to get out of the office, off the couch, out of the house and enjoying the City's great parks and pools.
Taking my dogs for a walk is a great motivation during winter to stay active in winter. The City has dozens of off-leash parks which are great for dogs.
You can take advantage of free entry to the newly opened Prince Alfred Park Pool - a beautiful, and warm outdoor pool - until November.
The City has public tennis courts that you can hire.
Or you could make use of our growing network of safe bike paths to get to around Sydney.