The first public 1in2 Day was held on Friday to raise funds for lifesaving cancer research work at the John van Geest Centre in Nottingham.
The day is named in recognition of the statistic that at least 1in2 of us are now predicted to be diagnosed with cancer at some point in our lifetime.
Scientists at the centre have made big breakthroughs in the fight against the disease and are now close to a vaccine for types of breast cancer.
Businesses, individuals and other organisations held events to pay for research at the lab, on Nottingham Trent University’s Clifton Campus.
A giant hokey cokey in the city, an exercise bike marathon and fancy dress events were just a few of the eye-catching events.
Here’s a round up of what happened on our social media live blog. To find out more, get involved, or just donate, see our guide.