What time is Sport Relief 2018 on BBC One tonight, what are Zoe Ball and Greg James’ challenges and how can I download the app?
SPORT Relief is back for 2018 with the goal of raising lots of money for charities in the UK and abroad.
But when is the main show on BBC One and what are Zoe Ball and Greg James' challenges? Let's get the lowdown...
When is Sport Relief 2018 on BBC One and how can you get the app?
Sport Relief 2018 will air on BBC One on Friday, March 23, with all the action kicking off at 7.00pm.
In the lead up to the main show, a collective challenge to beat a billion steps a day is taking place place for the whole week, and the public are being called on to make their steps count.
To help the nation keep track of their steps and ensure they count towards the national total, A Sport Relief app will be available to .
The app also includes innovative challenges, exclusive celebrity content and an inbuilt national step tracker to keep count towards the billion, while the step-tracker will also convert steps for wheelchair users.
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What are Zoe Ball and Greg James' challenges?
Zoe Ball undertook a massive cycling challenge to raise mental health awareness - after the death of her boyfriend last year left her with "lots of questions".
Cameraman Billy Yates was found dead at his home last May and had been living with mental health issues for several years.
Zoe said: "I wanted to do something for him.
"One in four people is living with mental illness. That's a lot of people struggling."
The TV presenter completed a gruelling five-day ride from Blackpool to Brighton, with crowds cheering her home at Brighton Pier as she finished the challenge.
Before she set off, Zoe sad: "I think lots of people know that I lost my boyfriend last year, who lived with depression for a very, very long time.
"I was really touched and moved by the number of people who got in touch with me, who have been through the same, or living with the same issues.
"Mental health resources are under huge pressure and there are a lot of people who are not necessarily getting the support they need in time."
Greg James also got on his bike in support of charity, climbing three of the UK's highest mountains while cycling between them.
His first attempt at the beginning of March was thwarted by the weather when the Beast from the East blasted Britain, but he finally completed his challenge on March 16.
Greg tweeted: "Challenge done. But this isn't the end. I will do something new with Sport Relief around the mental health issues we've discussed."