WTF is she holding? Use heavier weights, ladies & gents. Arm workouts; as long as you use REAL weights, you'll see progress.
I just did this for the first time and man am I going to be sore in the morning. It says it's a leg workout, but it definitely works your arms and core as well. I can't do burpees because of my ankle and knee injuries so I did a one minute wall sit. Here's to hoping that in six months I have my sexy legs back.