Here you go. I looked into circuit training and the benefits of it for you. What I have incorporated into my life and the (physiological) reasons why, I have listed below. I hope this helps:

Circuit training is a great exercise that combines the benefits of lifting with cardio. If you are completely unfamiliar with how circuit training works, here is a brief guide to get you started. I

Thanks for the thorough report. Not sure if it's for me but I appreciate the work you put into it.

Wow, thanks for the information! You put a lot of work into it! I think one reason EA Active makes me so sore is because I don't do circuits in the gym, so it's definitely a good switch to keep my body guessing.