I *really* didn't like this one. I think it was all the climbers. I wanted to kill the makers of Freeletics while doing those.
I bet you're not the first to think that while doing an Iris! Thankfully this was the endurance version so they were mountain climbers instead of climbers. I skipped the standard Iris that came up the next week because I think sets of 100 climbers would destroy my hips right now. I'll get there. My totally unscientific opinion is that they are probably not bad things for orienteers to do.