kathryn
Cathlete
I really enjoy this workout, even though I don't leap as high as Cathe, and about half-way through the "terminator climbers", I do the move more like an old coot climbing up a steep hill. My progression is kind of like the riddle of the sphynx: I start at a crawl, like a baby on all fours (when I first did them), then I walk like an adult on two feet (the first half of them, the second time around), then I slow down and wobble like an old man using a cane.