LB
Things to think about;
- how far can you walk?
- how far before you are in pain?
- how far before you are breathless or exhausted?
- how long before you can repeat the exercise?
- for a given distance, how long until you fully recover, either that day or the next?
- how long does it take you to walk the distance?
- what is your style of walking, do you stumble?
- how variable is it?
- how many days a week are you like this?
- do other activities affect how far you can walk?
- do you need to "schedule" walking into your daily/weekly routine?
I'm sure there is more, but I hope you get the idea.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
