Weight gain after excerise, why????

[Guest guest]

Good morning. This might sound weird and but everytime that I

excerise, the next morning I gain between 0.5-1lb and I don't

understand why. The type of excerise that I do is so light, I go on

the treadmill at a speed of 2.9 with no incline for about 45min and do

light strecthes and I gain weight the next day. I am currently eating

a 1700 cal a day and when I excerise I do add in another 200 cal in

form of protein only. The days that I do not excerise and eat my

regular cal of 1700, the next day I lose back the weight that I

gain...WEIRD. I am not cheating but I am noticing a tread and it

happens all the time, why is that? I am currently in P3 stage and

under my LIW by 0.5lbs and able to manage that for a week and a half

until I excerise then lose it back when I don't excerise. Should I be

eating more calories to hold the weight? Should I not excerise?

Should I wait until P4? Any suggestions or your experience will be

great!