What's the bell?

I'm using the NHS couch to 5k app... What's the bell noise that rings during a session?

[Fattybutbuts]

It means you're half way through that day's session.

[JohnTR Graduate]

Second half, come out fighting! 😁

[Kezy80 Graduate]

Half way through, took me far too long to realise. I run along a river so I thought it was the boats for about two weeks 🤪

[F4TMAN]

It's to let you know when to turn around, so you'll end up back where you started at the end of your cool-down walk 😉

[Hidden]

Thanks all