Shin splints?

In preparation for the 5 K walk our RS Sisters will be doing, the weekly Health Tip is:

Shin splints? Strengthen your shins by filling a sock full of coins and sitting with your feet hanging down, not touching the floor. Put the sock on top of both feet. Raise and lower your feet, bending at the ankle. Don't lower too far, or you'll lose the sock. Do this every day, completing about 20 repetitions.

I haven't decided to participate yet, but I think actually posting this tips will get to consider it. I miss my former walking partner and am at a loss to get started again. I guess I just need to start as begun is half done, right?