Excuse for weight gain

I am an active creature, why, I even ran the bangalore half marathon last month, but then I keep putting on weight. For years I blamed it on lack of enough exercise, diet (rather, lack of any caution) etc etc but now I have found out the actual reason for my ever increasing weight.

It seems that the earth keeps increasng its mass, almost every day, leave alone all the debris that add mass to our earth, that I heard is a lot of increase. Also, atleast some of the energy that strikes earth from the sun is some way or other converted to mass (e=mc^2), hence mass of the earth keeps increasing, hence gravitational force which is gmm/r^2 increases hence my weight increases, so well thats it, why fret if you gain weight its all just a reciprocal effect.