I tend to work out in the evening, but occasionally I had to readjust my schedule-- this is quick excersise to put in place everyday! It's nice to start your day off with the energy you gain from exercising!
So, I just came across this and thought "This will be easy... its probably only hard for people that are out of shape"... well.. I just finished it and now I feel completely out of shape. The crunches were especially hard. Needless to say, I need to work out more haha.