For the last two weeks, while doing my cardio, I have been doing awesome, this morning, however, I found that while doing my lunges I was losing my balance alot. It was quite frustrating and I feel I wasn't able to get a really good workout in because I had to catch myself more times than not! Also in my first two weeks I was very energetic during my workouts and now I feel like I'm losing steam. Awhile back I mentioned my ears plugging during excercise, and that happened to me again this morning, also had a little dizziness. I don't know but it appears these things are all related to one another. Just wondering if anyone had an explanation. That's all I need is for something to hinder my workouts.