More Energy for Workouts

I can't believe this but I am actually wanting to work out. I have a lot more energy since starting my Isagenix program in the beginning of December (http://healthytwo.isagenix.com/us/en/home.dhtml). I've had to increase the level on my exercise bike and I've begun to get off the bike after 30 minutes and do another 20 minutes on the treadmill. I'm also doing a yoga workout with dumbbells. The most interesting part for me is I am not doing this everyday. Only two or three times a week but still seeing a huge increase in lean muscle. I am thinking about doing a 5K in May. I think that is a good goal. Right now I am doing one mile walk run on the treadmill. So, wish me luck!