TV doctor Dawn Harper has challenged people to get on their bikes in Hounslow this weekend in support of those with brain tumours.
Xercise4Less gyms across the country, including the centre in Staines Road, Hounslow, are holding an On Yer Bike spinathon on Saturday (February 27) in aid of Brain Tumour Research.
Teams of six are needed to pedal exercise bikes non-stop for 12 hours during the challenge, which is being staged at 35 gyms across the UK.
Dr Harper, from Channel 4's Embarrassing Bodies, said: "Cycling is a great way to get moving whatever your fitness levels. A decade ago, I got on a bike to help heal a bad knee injury and I haven't looked back. Now I'm encouraging people to get moving and raise money for Brain Tumour Research."
Each team is hoping to raise at least £2,740 - enough to fund a day's research at one of the four Brain Tumour Research Centres of Excellence.
The spinathon will kick off Brain Tumour Awareness month, running throughout March, the highlight of which is Wear a Hat Day on March 24.
Brain tumours kill more children and adults under the age of 40 than any other cancer, according to Brain Tumour Research, yet just 1% of the national spend on cancer research has been allocated to the disease.
To take part in the spinathon, call Carol Robertson on 07817 878407 or email email@example.com.