I have been doing RI 30 on and off for the past few months. I don't religiously follow the plan, but what I do is incorporate the DVD into my workout routine to (a) keep things interesting and (b) just do some of RI30 whenever I feel like it!
My favourites are levels 2 and 3 and I do them back to back to make an hour long workout.
For me, level 2 is the hardest of all the levels, even harder than level 4 in some ways.
I agree about the plank cardio interval - 2 minutes in plank while doing cardio at the same time - it could only be Jillian!
I don't struggle with my arms as such, but it's more my wrists. They start to hurt about 1/2 way through the 2 minutes, but I find if I just shift my positioning slightly - say turn my hands inwards an inch or two - then that moves the weight on my wrists and I'm able to easily complete the interval. Like you, I don't find the actual cardio element hard, but it's more the pressure on my wrists.
And as for crow push ups - well, let's just say when I first tried them I thought I'd never be able to do them, but now a few months on they are much easier and I can really feel the strength in my core has built up over time.
Keep it up - it's great fun even if you do end up wanting to kill JM at the end of it!
Please read my ticker backwards as I am trying to gain weight.
More details on my Spark Page.
| current weight: 108.0