Good posture affects both your physical body as well as your emotional and mental well-being. It is very important during exercise, having good posture has many benefits. By positioning the body correcting while sitting and standing, there is even pressure on the spine, its muscles and ligaments. Having good posture can reduce physical stress on the body.
Art of Manliness published excerpts from FM 21-20, an Army field manual from 1946 that includes the physical training program used by GIs during WWII. I love how simple and appropriate it is.
This series may offer you practical suggestions on exercises to incorporate into your own workouts, or simply inspire you to get in shape and embody the kind of strength and fitness that would make your grandpa proud!