amyd
Cathlete
I like the LIS series but think it is really plank and push-up intensive. What I really like about XTrain is the fact that you work every muscle and she focuses on the assist muscles too. The rear delt work is fabulous and my shoulders are starting to pop! For these reasons I think XTrain first to build a strong base and then LIS!
Hope this helps,
Amy
Hope this helps,
Amy