If you are feeling tired, and the legs are feeling heavy, that can be a sign that you might not be feeding your body enough food or giving it enough rest.

do you feel better after taking a few days off the bike? keep a food journal (i like fitday.com) to see how many calories you are eating per day. also, look at the foods you are eating, you might be missing something (for a lot of women, it seems to be calcium rich foods).

anyway just some ideas for you to work with...

Hannah