Somehow, Jari is more "doable". I can't figure out why with Cathe's workouts I can't do two different leg exercises in a row (i.e. lunges after squats) without taking a "vacation" as Cathe says. But with Jari's workouts I can. I don't know what she's doing differently, but it works for me. As I got older, I started to get discouraged with Cathe, but I don't feel that way with Jari. Sure, I skip a repetition here or there, but basically I can keep up with all the exercises, and I don't feel bad about myself.
And even though my workouts are catch as catch can, I'm actually seeing some muscle tone! My quads are really responding. I'm so surprised, considering how little time I have these days to work out.
I haven't tried RTTC yet, but I'm going to try it today.
In short, Cathe is definitely harder. But I'm not so sure that harder always gets better results.
Nancy