Jacuzzi of smugness!

the-smiling-buddha pedalling at a 'middling speed' ain't going to burn 700 calories banging along at 80% of your max output might

'middling speed' is kinda vague. WTF is 'middling' anyway?

80% of my HRmax is fsck all - I could sit at that all day (ie. on a clubrun) and my Polar figures indicate I'm around 450kcal mark per hour (v. rough estimate).

I've just realised they said 700, not 300. So, yeah, their claim is pretty high.