
I “Jeffed” a 10K, and the results blew my mind (is this the secret to running faster?)
A couple of weeks ago, I told you how I’d discovered Jeffing for the first time, despite running and writing about health and fitness for the past decade. I was inundated with messages from readers, some telling me how they’d ‘Jeffed’ all of their PR’s, others asking for more advice. And I decided my dalliance…