If you've been keeping an eye on the fitness industry over the last few years, then you might have noticed some interesting changes in attitude.

Whereas fitness was once all about exercise machines, supplements and low-fat diets; today we're starting to go back to our roots.

Basically, we've found that these 'high tech' methods of losing weight, improving health and getting fitter just don't work as well as they should. And this really comes down to one simple truth: we can't do better than nature.

Today, health bloggers and thought leaders in the industry are preaching from a different book. Now we're being told to get outside more, to get sunlight, to swim in the cold water, to eat a balanced, natural diet and to train using our bodies and our environments.

And guess what? For the most part it's working!