Not referring to how fast you push the plunger, but how fast you push the needle in the muscle. Just a funny thought I had the other day when doing my shot, I've always inserted the needle EXTREMELY slow. Never really thought about it until the other day, I was trying to hurry and still... extremely slow. Made me curious if I was the only one that did that. Everytime I've gone to the doctor and got a shot, it's usually pretty quick. However, when I do it myself I go extremely slow. Everyone else go slow? Or am I alone on that one lol.