Challenge accepted. Circuit training is important when trying to get the heart rate going. You can get the same results as you need to in a shorter period of time, versus running the long and hard way(Which is what I prefer, personally). I am taking this challenge and I will post an update to let you know how I did. Wish me luck and don’t forget to join me in this challenge and post how it made you feel! You can view the challenge here.
Sharde's World 