"…You may wonder how your wrist will become improved by
any forearm practice , so before we go any further, let me
enlighten you upon the fact that the muscles all taper off
The weaker the muscles, the more stringy and thin are these
cables. The stronger and bulkier they build up, the thicker
the ligaments become.
As these ropes of connection taper off at the wrist, it is
only a natural condition that the wrist size should be
increased. When I commenced heavy exercise, I had only
a seven inch wrist, just an average size as I have said, but
to-day my wrist measures every bit of eight an a half
inches… The sinews that have massed upon the wrist
are very heavy…"
Muscle - after 3 weeks of training
Heart Muscle - after 4 weeks of training
Bone - after 1 year of training
Tendon - after 1-2 years of training
Ligaments - after more than 2 years of training
Cartilage - after 3-5 years of training
This is an excerpt from a John Wood email I got.