First off: This isn’t the start of a new longer-term Primal Challenge. 1000 days would be fun, but I’m pretty sure we’d run out of ideas — and sponsors. Apologies to everyone out there chomping at the bit for a few years straight of new contests and prizes. You’d get sick of it yourself; trust me. Plus, that shorter 21-day Primal challenge format works because it’s the perfect way to quickly kickstart real change, disrupt bad habits and establish new ones. Today’s challenge concerns long, lasting, sustained, momentous change that happens over a greater timescale. 

(This Mark's Daily Apple article was written by Mark Sisson, and is narrated by Brock Armstrong)