Well... For one, if you increase the frequency or intensity of your workouts, you are forcing your body to retain water. Also, by eating at maintenance calories instead of at a caloric deficiency, you are storing more glycogen in your body, which requires further water retention just to get it stored.
So I think most of your weight increase is due to water retention instead of fat stored at maintenance calories. To be sure, you could get your body fat % tested. Weight is not an objective measure of the fat content of your body. Most gyms offer body fat % measurement by skin fold calipers.
To calculate your maintenance calories, take a look at this article: www.sparkpeople.com/resource/calorie_calcu
Edited by: MPLANE37 at: 4/29/2013 (03:49)