Tiny range, massive calf burn.
Move slow at the top, full squeeze beats fast bouncing every time.
Driving your heels up from an already-lifted position keeps the calves under tension for the entire set, with the work concentrated in the top range where the squeeze is hardest to hold. There is no bounce and no rest at the bottom, just repeated peak contractions through the balls of your feet. It earns its place as a zero-equipment calf finisher you can do anywhere, and the slow top-range squeeze teaches the contraction quality that makes every other calf exercise work better.
It is the top slice of one. Instead of cycling through the full range with a rest at the bottom, you start with heels already lifted and press higher, so the calves never get a break. Think of it as a constant-tension calf raise.
Go high. Calves respond well to volume and this is a short-range move, so sets of 15 to 25 with a deliberate squeeze at the top fit it best. Stop when you can no longer reach full height, not just when it burns.
Standing on the balls of your feet shrinks your base. Rest fingertips on a wall or rail for balance so the calves stay the limiter, and keep the press slow rather than bouncing, which is what usually tips people over.
