Why would you want to cough or feel something when you inject it I'm very confused. The smoother it goes in and the less things you feel the better. It's not "drugs" there hormones, there's no high or special effect you get, maybe a little better workout that day, but that's it. If you do start coughing it means you probably nicked a vein, and with Tren the cough is worse, but you don't want that to happen.