As for "Super Joints" and "Relax into Stretch", I found them hugely disappointing. "Relax Into Stretch" relies largely on one technique and then proceeds to describe stretching exercises that you'll find in many other books,probably at a lower price. In summary-use his kettlebell techniques (with caution) and ignore the rest.

The methods are clearly explained with just the right amount of science, enough to understand the process, but never the less aimed at a practical user rather than a medical audience. All the stretches are also clearly illustrated with good quality photographs ensuring correct implementation.

The only proviso I would make is that the protocols required to achieve results require both mental toughness and pain tolerance, which should not be a problem for those serious about improving performance in their chosen activities, but for those simply seeking increased mobility in everday life I would recommend 'Super Joints' by the same author as an alternative.