I did; they still seem freaking hard. I suppose they're meant to - per aspera ad astra - but right now, they feel too hard to pursue. Like I said in the post: I get a certain level of endurance and strength for each consequent day, while with burpees, all I seem to do is challenge myself. It might very well be that I've picked the wrong challenge for me: while Running and Core Challenges work slowly but steadily towards the goal and I get the feeling that I can tackle the next one since I did all the previous ones, Burpees Challenge just tires me physically and mentally. If I decide to drop it - which seems more and more like a reasonable idea - I can always pick it up later, or include them, in a different fashion, in further challenges, or leave it on the floor and, instead, take up something that suits me more.For the burpees, I'd say break them into sets