We've got Dr. Ross Tucker, from the University of Cape Town in Cape Town, South Africa in the podcast today.  Ross is currently on the management team of the South African National Sevens team (you'll have to listen to find out what Sevens is), is one of the most astute and well-spoken young Exercise Physiologists in the world, and has been heavily involved in the debate about whether Oscar Pistorius should be allowed to compete against able-body track athletes.