Walking Insanity

Today I started out with a walk.  I went out, did a spin around the hood one time (2 miles) and came home.  I did not push too hard on my walk, I wore my body bugg and I wanted to see how much I would burn if I just did a nice moderate pace for 2 miles. I burned about 150 calories.  I figured I would be trying out day 2 of Insanity later in the day, so I just went easy on the walk.  I pop in day 2 of Insanity, "Cardio Power and Resistance" and did what I feared,...hurt my knee....ice and a knee brace for the rest of the night...oh and I only burned about 250 calories for all that torture and sweat.