I find all the mish mosh postings really interesting and I'd love to try several of them. However, I'm stumped. How do you use the mish moshes without losing your momentum? Do you keep putting in/taking out the required DVD's in order to get the whole workout? or do you tape all the segments together on to a video and do it all at once? I'm worried that I'll lose my edge/momentum and won't complete the mish mosh. Is it the kind of thing that takes practice?