"There have been times where I would specifically give my leg or my toe a couple of really good electric shocks. That would make my blood pressure jump up and I could do more weights and cycle harder - it is effective."
Those are the words of Brad Zdanivsky, a 36-year-old Canadian quadriplegic climber who has experimented with something called "boosting" in the gym. But the practice isn't just limited to the gym; disabled ...