Below is an example of a very brief feature of The Reg Park Journal in the mid-twentieth century, highlighting one particular exercise and describing the benefits. This was a practical and beneficial feature of Mr. Universe Reg Park’s physical culture publication.
“Chins” behind head are an exercise which can be used as a basic body-building exercise or on your “off” training days “free style.”
It has a great effect in developing good posture–it works the biceps and upper back, but its greatest value is in the range of movement it puts the scapula through–as no other exercise does. This has terrific ability in developing the shoulder bone structure (which actually controls the limitations of the shoulder girth which run from the neck to our deltoid with the scapula connecting.
American “Powerhouse” Marvin Eder in training has done 200 repetitions in sets on his “off” days. If using the exercise in your actual work-out, push for weight as in fig. Try 6–10 reps., 5 sets.