Oh shit! Really!?are muscular injections no blood ones, are like the vacines shots, they go to your muscles no to your veins, only few injections (Shots) go to blood torrent and they are dangerous if you don't have the correct handle.
As far I know the injections can be: muscular, intradermal and blood (vein) those with air presure normally are muscular ones.
Didn't knew that. Thought it was all veins.










