A jumping jack is two moves at once, and this jumping jack counter checks for both. A rep needs your arms up and your feet apart together, then arms down and feet together again.
That keeps the number honest. Arms flapping on their own or small foot taps in place don't add up to reps, so square up, start with your feet together, and let the coach handle the count.
Phone setup
Stand the phone upright at chest height and step back until your arms overhead and both feet fit in the frame at once.
Face the phone square-on and start with your feet together.
- Starting turned or staggered can stop the counter from starting, so square up to the phone first.
Form cues
- Start feet together. That closed position is what the counter looks for before the first jump.
- Arms and legs together. Swing your arms up as your feet jump apart. A rep only counts when both halves happen.
- Land and close up. Bring your arms down and your feet back together to finish the rep.
- Jump on one spot. Staying put keeps your hands overhead and both feet inside the frame.
Common mistakes
- Waving only your arms. Arm raises by themselves don't count. Your feet have to open as well.
- Hopping with the legs alone. Leg-only hops don't count either. Bring your arms all the way overhead on each jump.
- Starting staggered or turned. An off-angle start can hold the counter back. Square up with your feet together and it can begin.
How FitnessBruh counts it
Two signals are read together. The arms are measured by how high your upper arm swings at the shoulder, and the legs by how far they open at the hip.
A full rep needs arms up and feet apart together, then arms down and feet together again. That's why neither half works alone, and why a clear view of both matters.
Because the legs matter as much as the arms, counting waits for a steady view of your whole body, knees and ankles included.
FAQ
Do jumping jacks count if only my arms move?
Not on their own. A rep needs arms up and feet apart, then arms down and feet together, so both halves have to happen before the number moves.
Why won't the counter start when I begin?
Starting turned or staggered can hold it back. Square up to the phone with your feet together, then wait for a steady view of your whole body.
How far back should I stand for jumping jacks?
Far enough that your hands overhead and both feet fit in the frame together, with the phone upright at chest height. If either gets clipped, take another step back.
