I have been doing Cathe workdouts now for about 4 months. I have the Rhythmic Step/MIC/IMAX and Cross Train Xpress. I love both DVDs and find them more challenging mentally and physically than anything I've ever used. My problem is that about and hour or so after I am done working out, I start to feel totally wiped out usually until the end of the day. I am lagging mentally and could probably lay down for a 2 hour nap. I work out when my kids nap, about an hour after lunch. I feel that I hydrate sufficiently, before and after, and I always have a snack after I workout too. I do not want to give up working out with Cathe, but I do not want to feel this way anymore. I would appreciate any suggestions you might toss in my direction! Thanks a lot, Pam