How do you "know" you can't do it if you've "never" done it?
Here's a surprise for you - once you get past 5-10 minutes, running further is MUCH easier. It's hard to add 2 mins to 3 already. But it's easy to add 15 to an existing 10.
The first 10 minutes of learning to run are the hardest and it's actually WAY easier after that. That's why there's such a jump there.
You CAN do this. You just think you can't because of prior experience, but prior experience is in the tougher earlier few minutes.
You have to think to yourself - if it was that hard, wouldn't the program get lots of complaints? It's built this way for a reason. It's NOT as hard as you think.
And hey, if you do feel at 10 mins like you really can't keep going, then just keep trying. You don't necessarily have to get it all the way on the first try.
Deb, in New Zealand