NATURAL HORSE - Natural Horsemanship Equipment and Equine Relationship Training
This IS NOT the same as strip grazing which offers the horse no freedom to move.
Some of our herd on our track
Tracked grazing is when you make a continous loop around the inside edge of your paddocks (often using electrical tape and standards though some tracks are permanent too) as to give your horse/s enough room to move freeley but restrict the amount of grass s/he can eat due to this excellent design, which is basically a living treadmill for your horse as it allows him or her only to take a few mouthfuls and then be forced to move on another step for more grass .......and just like with people, movement and exercise is the key to having healthy horses.
Basic tracked grazing is easy to do.
Why does this work ....
Well horses naturally follow trails and tracks in the wild and will make their own in your paddocks if they are big enough. And we can mimick this natural behaviour by setting up an easy and cheap tracked grazing system from anything as small as an acre upwards as shown in the diagram above. This encourages your horse to move his feet to eat (which is great for  circulation and has the bonus ofd developing excellent barefoot feet too) and it's this natural movement that allows for 24/7 turnout-even for those with grass restrictions like miniatures or horses prone to founder/laminitis.
Now as I am such a sceptic, of course I had to test this out fully to see if it worked before using this method. So I used a digital pedometer attached to my herds halters and monitored this over a week with them on a track and then a week on a free paddock, and guess what-yes it definately made a difference, and to my pleasant surprise my horses walked on average 5000 more steps per day when on a track which adds upto a lot over 365 days per year. Plus I could restrict their green grass in take without being cruel and locking them up, which made me (and them) feel better, especially those in danger of developing laminitis/founder etc... 
Tracked grazing is so easy to set up as shown above temporary of permanent like shown here
That was 6 years ago and I have never looked back. Plus I have since gone on to become more imaginative with my track, and added gravel, and river stones, crushed lime etc....and placed the water troughs in strategic locations as to encourage even more movement of my herd....putting herbs in pots and hay in our slowfeed hay bags in various locations as to make the herd forage for their food as to create more movement.....
Now you can Google for more info on this and we recommend the following for in depth info
Paddock Paradise Book by Jaime Jackson