It may be due more to greater intensity. I have not done a 3 on 1 off schedule in over a year, so i'll have to ease in to it. I'll bet the front squats may have had something to do with it too. i'll Just take it easy and listen to my body next week. Taking the weekend off and eating lots of food.
Right now im sitting at 150lbs at 5'5''. Debating on adding another 10 lbs, just don't want to do anymore GOMAD.