How to Gain Weight and Build Muscle

Published: Dec. 31, 2014, 1:06 a.m.

So you wanna put on some lean muscle mass. And you want to do it within the context of the Primal Blueprint, but aren\u2019t sure where to start. It\u2019s a common question and it\u2019s about time I addressed it head on.

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