I gave up running about basketball basically 10 years ago to protect the joints although I've dabbled in both since... just not to the extent as before. So, I've always been looking for good aerobic alternatives. I stationary bike some and will use a HIIT routine vs long, drawn out "rides."
In the snorkel thread, I had a picture of one designed especially for lap swimming. I never bought one but I did (finally) try just a regular snorkel. IT WORKED GREAT! I still wear the usual swim goggles but I just hang a snorkel over one shoulder and it allows me to up the intensity as much as I want with no pounding on the knees or back. I sometimes think the snorkel needs to have a greater diameter to accommodate the amount of wind I'm sucking! It really is great because I can get a very intense workout in with none (?) of the negatives that running or cycling cause.... plus I'd just rather be in the water sometimes. I read (posted?) that, as you get older, intense workouts help to lessen the drop in metabolism that occurs naturally so that's my intent.
Now, I just need an underwater iPod!
