Nothing. A 5% drop in your body fat is pretty good. Well, ok, the only thing that may be wrong is your expectations. Your achievements sounds pretty good.
Your body gets more efficient (ie. burns fewer calories) at anything it does regularly, and it is recommended that you change things up every 4-6 weeks. (Which it sounds like you have been doing anyway). It's not that you are doing anything wrong, just that change in itself is good.
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
| current weight: 178.0