Couch to 5K Week 2: Workouts and What to Expect

What to expect in week 2

The runs go from 60 to 90 seconds and the walks from 90 seconds to two minutes, six rounds instead of eight. Here's the part worth noticing: across the whole session you run one minute more than week 1. Nine minutes, up from eight.

So each interval is 50% longer, but the workload barely moved. That's why the trick this week is to keep last week's slow pace rather than treating a longer run as a reason to push. The extra 30 seconds is the whole challenge; don't stack speed on top of it. All three sessions are the same again.