Accelerated Body Transformation

This 'J-Core' is great. You workout with one of the DVD's for 20mins each day. That may not sound like much, but I'm a 160lb 30y/o man who lives a pretty active lifestyle and I can't keep up with it yet! These are all simple activities that we just never do. The workouts are short, efficient, and fun. makes me smile and laugh a little bit. Any first-timers, even if you are physically fit, I promise, you will feel it in every muscle in your body! No weights? YOU are the weights.BTW, I saw first the Ad for the book version of your workout 'Cardio Core 4x4' in 'Bicycle' magazine. For me, the book was hard to use, but at least I could see what your system was all about, and it does contain alot of good reading material that you don't get from the DVD's.I am very happy with the J-Core workout DVD's. More than worth the money! But Jay, you should've still named it 'Cardio Core 4x4' like your book(that name got my attention in the first place). Thanks Jay, for producing this workout, and for being a fun instructor.Matthew Z in Tampa Bay, Fl.

tl;dr: Just stick with the dvds.Caveat: I'm a Linux user. Typically, I am able to ignore "Windows/Mac only" labels with respect to usb devices. However, this particular product was DRM'd.Ignoring the fact that I was only able to access the content via my Windows 8 virtual machine, this was still a pain to access. Firstly, despite Windows clearly being marked as a supported platform, you have to install QuickTime codecs, since a native (wmp) format isn't provided. Once installed, you are made to use a proprietary viewer application with an abysmal interface. It seems to be some kind of web app with a primitive video player (read: no full screen support). Here, I'd have simply opted to use a media player of my choice (such as the excellent vlc media player), but I couldn't. You are forced to use this application. My other complaint stems from the poor quality of the video. It seems to be encoded at something far below 1080p or even 720p like 480i perhaps.In summary, this format is neither convenient, nor worth the reduced price. Pay the extra 30 bucks and get the whole package. Even better, buy from the site direct and get it for a grand total of 59.95 (14.95 free trial then 45).

Videos are good. However, skip the USB, it's a pain. There is so much security built in that simple things like making the screen bigger isn't feasible. I'm going to end up taking a video of the USB video, just so it's portable and I can have more flexibility. Wish I would have bought the DVDs.

I have done a lot of different workouts and liked them. I am subscribed to Tracy Anderson and love the variety, that I don't bulk and my backside looks great. I've gained weight recently doing a necessary health regime and wanted a kick start. Granted, I'm only on day 2 plus the test, but this is quite a workout. This is what I remember feeling like when I would train for a sport in school. Much more upper body work, full body work, and I really feel good afterwards. I am someone who easily bulks, so I will give another review after 40 days. I already eat clean (minus happy hour with workmates, which really, I'm more than happy to give up). It feels too good to have your body feel good. I probably will not do his diet also because I don't eat grain. Also, as other reviewers have said, short bursts. ... you have about 30 seconds an exercise, so you don't get bored, or want to quit from too many repetitions, but there is definitely room for improvement. And the $ for me is more than I would normally spend. But if you are someone who is time limited, gets bored easy, and likes to feel challenged, I think you would enjoy this workout.

I consider myself an intermediate to advanced excerciser and didn't think a 20 minute workout would be enough but there are days when I want to fit in something quick or when I'm too tired for an hour long session.These dvds contain the most fun excercises ever and they really are challenging.I've been using them as an add on to my strength training workouts and they really do make me sweat!!They are so much fun that I look forward to doing them-I have a huge collection of workout dvds and other then TaeBo,these dvds are the only ones that I actually crave!Jay is so encouraging without being over the top annoying and the excercises are more like fun then a dreadful workout!I would highly recommend them-since they're short,advanced excercises can do 2 back to back or like I do,add them on to another workout.I've wasted alot of money on awful dvds and this set is the best purchase I've made in awhile.I only wish he had more dvds out there!And the JCore company was a pleasure to deal with.

I'm sure the product is fine, but I ordered this in May to use for future trips. Just went to open it today and even though I ordered the USB version, I received the DVDs only, which is useless because I don't have a DVD drive. Can't return because it it's past the 30 day return policy. Feel like I just threw money away - lesson learned. . . . if you purchased something for future use, or as a gift, you might want to open the package and make sure they shipped you the correct item (I did confirm that my order says "USB" version.

My husband was skeptical when I bought this for him. But we both love it. Anyone can squeeze in 20 minutes, and it is hard but enjoyable. Jay himself is quite likeable, and he knows what he is doing. We have taken this with us on vacations and even used it from our laptop. I usually do a few extra pushups and triceps dips at the end, though. If you are already in good shape, you may need a little more.