If I may offer a suggestion here. In order for the numbers to be meaningful comparisons between people and even for an individual over time, may I suggest that, in addition to ensuring that the hips don't lag, you consider touching your chin very lightly to the floor at the bottom of the movement. The reason I say this is that I see a number of people do push ups fairly regularly at the gym. And for the most part, people do them differently so that a comparison would be somewhat of an apples to oranges proposition. I realize that the article in the OP's link says to stop 2 inches from the bottom, but that can become a somewhat subjective measure when you're doing them at speed and going for volume. Anyway, just a thought.
True. But saying it and doing it can be two different things, as the picture shows. I'm just saying that you need to be fully conscious of it throughout the set.
Your right you'll only be cheating yourself. I like you idea of chin lightly touching going to try it.
I just saw this thread and I love it. One of my favorite workouts is Angie from Crossfit. 100 pushups, 100 airsquats, 100 situps and 100 pullups for time. I sucked when I did it many years ago, and I was in pretty good shape. But I love the idea of timed bodyweight workout challenges, and it is time to start pushing hard again. I will try this tomorrow.
I didn't read the article at first, I was about to feel really weak if you all were cranking out this many push-ups in 3 minutes without stopping lol. I got 55 the other night in a minute, but haven't ever tried this. I'll give it a shot before bed.