Meanwhile, I've almost logged 3 years of weekly exercise on the biodensity machine. A few weeks ago I began holding the exercises for 10 seconds instead of 5 seconds. Much harder..but I'm getting used to it. Here's the latest report. I'm due for another Dexa scan in December, so I'll be able to see the results of these past 2 years of biodensity training. For the first year, I gained 2% in bone density, reversing a steady trend of losses.