I'm always amazed at weight and what makes me lose, gain or just stay the same. Last year at this time of year, just like every year, I am at least 5-8 pounds too high. I'm 46 and each year it seems harder to lose that 5 pounds. Last year I took off about 3 pounds of the 5. However, it took me forever. I have to admit that I did actually get more toned and trim but only lost 3 pounds. I was out of shape at this time of year and then rode, rode and rode some more to get ready for Bicycle tour of colorado. and then rode the BTC. I only lost 3 pounds, I was fitter, my legs were tighter, my belly tighter, etc.; BUT

of course, those body changes are all gone again cause I'm not fit again. So, about 3-4 weeks ago, I started to ride my trainer about 2 times a week and started playing tennis. Playing tennis you say? Yah, I figured, no way am I going to lose weight playing tennis since I can ride hours and hours and hours and not lose but 3 pounds! But, lo and behold, I have lost 3 pounds, my stomach is flatter (can't say my legs are that much more toned yet) but I'm seeing some changes.

My theory is that it is such different exercise than I am used to that my body is actually burning calories doing it (it probably doesn't hurt that the building I play tennis in is really cold?). Anyway, the theory is I'm really efficient at cycling cause I've been doing it so long so the exercise does not burn as much calories for me. The new tennis is using muscles I usually don't use on the bike so I am burning calories.

What do you gals think about my theory? I don't know how else to make sense of it?