It sticks to the rack. That's the whole trick.
Stick it on
Eight N52 magnets grab flat onto steel. No clamps, no straps, no adhesive — and gym equipment is steel nearly everywhere.
Aim it, then lift
A 360 degree ball joint lets you fix a bad angle by nudging the head, not by pulling the whole thing off the rack and starting again.
Hit record, go lift
No tripod to set up, no phone propped against a water bottle, no asking a stranger. Stick it, frame it, and get on with the set.