I have started swimming regularly, we'll see how that goes....get a pool membership pronto one with lanes and not a lot of kids.
Joints make walking too much even hard, so swimming seems my best bet, loving it so far, hardest part is cramps, got to remember to warm up on dry land first so your toes don't screw up......ouch.
Also recommend this guy.
[youtube]https://www.youtube.com/watch?v=97b6XIntfcc[/youtube]
This isn't the actual swim video I got his swim video via Amazon, gives you concise lessons, and is worth starting over to relearn your freestyle....this is just him talking about his system.....good for us older blokes or anyone who has a desire to open swim at some point...