Six feet tall, 230lbs, most of my muscle in my legs. Surprised the heck out of me and they were EASY. Never even been able to do static holds or negatives before.
I think I'm going to submit form videos in October to see if I can move up to the second level of F1. It's been the mobility work holding me back, so I've been doing what I can to make the strength work harder. Looks like it's been working.
When I do move up to the next level, it's all due to the stretching series. Doing F1 has done next to nothing for my mobility, mainly helping repairing years of injuries. Doing the stretch series has seen staggering results in terms of flexiblity and mobility.