I have started riding with 5 pound ankle weights on each leg....I am to the point where it is getting harder to get my heart rate into the target zone because I am in much better cardio condition then when i started all of this in Feb. ..

Now with the ankle weights I find that riding the same cadence and same speed and same gear as before it has raised my heart beat by 12% thus I am getting a better workout now.I bought the ankle weights at Sports Authority for 17.00...