I know I see a lot here people who say they increased their exercise, or started exercising, why are they gaining?
Someone a long time ago had posted a link that I no longer have, but it was about exercise induced water retention.
When I first started exercising a couple months ago, I had a pretty consistent patter of loss: I"d lose on my weigh day (I weight every day but have a day I consider weigh day) and bounce all around during the week.
Anyhow, if I exercise, my weight will bounce up anywhere from 2-4 lbs overnight. Now, we all know if I'm eating On Plan that that isn't actual fat. It's pretty much a physical impossibility.
Anyhow, this thing I had read that someone posted here was about glycogen and water weight post exercising. Any time you add/increase exercise, your muscles need to heal, and how they heal themselves is packing themselves in glycogen.
1 lb of glycogen is generally packed in anywhere from 1-3 lbs of water.
I stopped exercising for a few weeks because of a pain flare. My losses were steady downward when I wasn't exercising.
I started again last night and of course I woke up to find that predictable almost 4 lb gain.
I'm not upset about this anymore, it happens every time. I exercise, I gain, it bounces around all week and then on weigh day I"m generally down below where I started.
Try not to freak out people. It's normal.