He has tried the jumping off the chair or box. His feet hurt from neuropathy, and it didn't work too well for him. He tried it twice.
The neuropathy results from demyelination of the nerves from the elevated glucose. If you can keep the blood sugar under control the myelin can regenerate, although it does this slowly. Lecithin granules, essential fatty acids and sublingual B12 (methylcobalamin) can help speed this up.