New Work Out??

I'm thinking about trying THIS workout. It claims that you'll lose a dress size in 2 weeks. It is pretty basic and doesn't require much equipment, just some hand-weights and either a treadmill or the ability to get out and walk.
Anybody want to try it with me? I'm planning on starting it Monday. We can hold each other accountable.....
Let me know!

P.S. I should be doing C25K Week 1 Day 2 tonight. I'll try to update later