Where to put the phone
Face the phone with a step of room in front of you. Whole body in frame at the bottom of the lunge.
What closes a rep
Step forward, drop the back knee low, push back to standing. The rep closes when your feet are back together.
What doesn’t count
Alternate legs on every rep. If a knee or hand leaves the frame, the rep in progress is dropped; step back into view and start the next one.
One tip
Each side counts as one rep.
After the set
Every set ends with the same recap: reps counted, time, pace, the longest run, pauses, whether the second half held up, and the camera angle the phone actually saw. Detail beyond the movement’s own rules is measured for the recap, never used to refuse a rep. Why we count and do not grade →