UPDATE 17/05/11: This is JM's best yet. I am now toned all over, my stomach is FLAT and defined in a way that even 6 week 6 pack did not achieve. This is undoubtedly due to all the plank work across the 4 workouts. I haven't followed the eating plan and have just eaten normally (gastro weekends away; parties; dinners out, melting middle chocolate puds), but still shrunk more than I thought possible. It's 2 weeks away from my holiday now and I am slipping into size 8 shorts and not too worried about being seen in a bikini. Result! The 30 days being up, I am now combining this with No More Trouble Zones or 6 week 6 pack (I do RI30 5 days a week, 3 of those days I follow on with one of the other workouts too). This seems to have given me even better results, especially on the stomach. A strange tip: I found that resting for 2 days gave better results compared to resting for 1 day. Not arguing with that. My fave workout was Week 4, especially the very last sit-up exercises. Good luck to anyone who tries this - stick with it, you will see and feel a massive change!
Anyone who has 30DS NEEDS this DVD as THIS is 30DS maxed out and refined. As the previous reviewer Sharnie has said, the idea behind this workout system from JM is that you complete workouts 1 through to 4 throughout consecutive weeks, going on to the next level each week. It is recommended that you complete the workouts at least 5 times a week (though one rest day per week is encouraged).
Anyone who has 30DS or BFBM will recognise the 3-2-1 strength-cardio-abs system, which really helps you to focus on giving your all through 30 second bursts of each move. While none of the exercises are repeated outside of each workout, anyone who has JM's other offerings will recognise most of the exercises across the 4 workouts. Although this DVD is closest in format and ethos to 30DS, the cardio moves were more akin to BFBM (a definite plus for me!).
In terms of difficulty, there is no doubt that this is harder than 30DS although I would say that for anyone who has managed a week or two of 30DS, then RI30 Level 1 should be achievable. There are beginners and advanced modifications throughout all of the workouts, so it's easy to take it up or down a notch depending upon how difficult/easy you find each exercise. In a fit of madness, I tried each workout back to back (yes, I had to rest between each workout and I have not exercised at all today!). Again, I agree with the previous reviewer that there appears to be less of a step up from Level 3 to Level 4 as compared to, say, Level 1 to Level 2. That said, each of these workouts is a serious sweat-inducer and I was well worked out with Level 1, never mind Level 4.
My favourites from this workout have to be the Bridge and Spider Plank with Press-Up which I am determined to master (you might recognise the latter from 6 week 6 pack). There is a lot of plank work across this series of workouts.
JM is great in this DVD and she looks amazing, a real inspiration. I noticed a few reviewers on amazon.com saying that they found her style on this DVD annoying, but I found her more likeable than ever here. There is the usual cajoling and bullying, but that's all a bit tongue in cheek. She is a real motivator and it is obvious that she really wants those who have bought the DVD to put 110% into the workouts; after all, as she says herself, she makes big promises about the effectivness of the workouts, but we actually have to perform the exercises.
I downloaded the meal plan out of interest more than anything else - the DVD menu tells you how to do that (it's through JM's website). Now obviously the plan is written for a USA based customer, so there are products mentioned that are not available over here, but that said the majority of recipes seem easy enough to prepare and it should not be difficult to find similar products over here. Basically, the meal plan amounts to approximately 1400 calories per day and looks fairly balanced and sensible. I noticed that some customers had requested that JM include more options for vegetarians; apparently, she is going to update the meal plan soon to reflect those requests. I would imagine that following the meal plan in conjunction with the workouts could not fail to bring results; not just weight loss, but also improved tone. There's only one way to find out - so I will update in 4 weeks.
In the meantime, don't even think about it, get the DVD, get sweating and get ripped (as JM would say). You will love it!