Our 30-minute Foundation Workout (A & B) circuits are designed for runners following our Runner's World Club 5K, 10K, half-marathon and marathons plans. Over the course of 12, 16 or 20 weeks ...

We say this with the greatest respect, but [Joel] — your exercise routine is horrible ... he searched for ideas for bounceless switch circuits in the old “Engineer’s Notebook” by [Forrest ...