). I've read tons of great reviews on Jillian Michaels 30 day Shred but I think it might be too hard for me to just jump into, plus in a lot of the reviews people complained that it was high impact and I'm worried about my knees. Can anyone here that has used her DVD comment?I'm also wondering if anyone has tried "Personal Training With Jackie: Power Circuit Training." It came out only about a month ago and got good reviews (even from people who didn't like her first DVD). It's with Jackie Warner from that reality show on Bravo called "Work Out."
I would really appreciate some input as my new upcoming school/work schedule will keep me from working out at the gym and the below freezing temperatures will keep me from working out outside.

