18/03/2016 Newsround

Hello, I'm Hayley and welcome to a sporty Newsround.

Today is Sport Relief and lots of you are getting your kit

on to get involved.

You may remember that Blue Peter took their Sport Relief challenge

to the extreme when Lindsey Russell took on a never before attempted

challenge to zorb across the Irish Sea.

Ayshah went to find out how she got on.

Lindsey, or should I call you Wave Runner?

Absolute star.

I'm so proud but gutted at the same time.

Tell me all about the challenge.

It was tough, it was a really long day, basically.

I started at five in the morning and I was in the wave runner ball,

zorb, for just shy of ten hours.

In the end, we covered 17 nautical miles.

The aim was 21, but sadly the weather got in the way

a little bit.

What parts of your body hurt after that?

Everywhere!

I think it would be quicker to tell you the parts of the body

that I didn't use.

You just use everything.

The bit that I didn't see coming that was going to hurt so much

was my hands and my wrists.

Obviously you go to the gym and you work on your arms,

you work on your legs and your core strength,

but no one actually tells you to go to the gym and work on your fingers

and your wrists because that's not a normal thing.

You had a lot of highs and a lot of lows, didn't you?

What about the highest points?

I think setting off from Donaghadee was a really, really nice moment.

We got there at 4am and people actually showed up.

For me, that was really moving.

My final high was getting into the harbour at Portpatrick.

Just to see my dad on the finish line and to see all of

Portpatrick school there.

What was the reception?

It was amazing!

We had school kids there, my family, there were banners saying

"Blue Peter rocks" and "Yeah, Sport Relief."

Is there anything you're going to miss about the zorb?

No.

Nothing at all?

No.

Glad to see the back of it.

What would you say to kids who have watched what you've done

and possibly want to get involved?

What would you say to them?

The point is to know that you don't have to get a ball and run

across the Irish Sea.

You really don't.

It can be something as small as going for a walk,

a run, a swim, a cycle.

It doesn't matter what it is, but just do something.

Take part, raise some money for Sport Relief and get involved.

You've been getting in touch to let us know what you're doing to support

Sport Relief.

Ellie in Dudley is running two miles while wearing her pyjamas!

Mahek's been in touch to tell us about his PE teachers' football

marathon - they're playing from sunrise til sunset.

And Jake in London is doing a danceathon.

Sounds like fun!

Thanks for all your comments.

Keep them coming!

Next, engines at the ready - the new Formula 1 season revs back

up again this weekend in Melbourne, Australia.

Britain's Lewis Hamilton is looking to become

a four-time world champion.

But that's not all.

There's a new track, a totally new team and some fresh

faces on the grid.

Ricky's been looking ahead.

I'm very, very excited, looking forward to getting back

in and the challenges that I'm going to face this year

are all unknown.

I know that it's going to be difficult.

It will be a tough challenge.

But it will be a great battle.

Formula 1 begins a new season with 21 races -

a record number - and a first Grand Prix in Azerbaijan.

Three new drivers are set to make their debuts, too.

German driver Pascal Wehrlein and team-mate Rio Haryanto,

who will become the first Indonesian to start a Grand Prix,

will be revving up their engines aboard Manor.

There's a new Brit to join the ranks of rookies, too.

Jolyon Palmer joins Renault.

He's already been on Newsround telling us all about it.

Very excited.

It feels like it's a long time coming to be in this position

and a dream come true so I can't wait to get started.

Although Mercedes may still be the team to beat,

one team smelling the fresh scent of burning rubber will be US-owned

Haas, with Frenchman Romain Grosjean and Mexico's Esteban Gutierrez

in the driving seats of the new team on the grid.

Ferrari's new car has been fast in testing so far.

Qualifying this weekend will tell us if the Prancing Horse can match

the might of the Mercedes engine.

In the hope of making the sport more exciting,

F1 bosses have decided to introduce a new elimination-style qualifying

system.

The new system will see drivers knocked out every 90 seconds

in the closing minutes of each of the three qualifying sessions.

So who's going to win it?

Here's what the BBC F1 team predict.

Lewis Hamilton is going to win the 2016 F1 drivers' title.

Lewis Hamilton will win the Drivers' Championship.

Lewis Hamilton will win the World Championship again.

I just think he's slightly too good for Nico Rosberg in that car.

It will be tougher for him this year.

I think his main challenge will come from Sebastian Vettel

in the Ferrari.

I think Nico Rosberg's going to win the drivers' title this year.

He was on a roll at the end of 2015, winning the last three races,

the last six pole positions, and everything we've seen in winter

testing so far suggests that he really is getting on well

with the latest Mercedes.

Next to France for a sporting challenge with a difference.

Finally, after all that sporting effort, how about a sweet treat?

A chocolate maker in Croatia has created an eco-friendly chocolate.

Using old-fashioned techniques, ecologically-certified cocoa beans

and special equipment he's invented himself,

Marinko Biskic's eco-treat takes 50 hours to make.

He says the delicate process can even be affected by the weather.

That's all from me - Newsround's back at 4.20pm.