all in the head is my thoughts, I was very nervous the first time I shoot, got a heat flash, felt like I was gonna pass out, started to panic, after a few min's I was cool. Every time gets easier and easier, I have been shooting myself since my second cycle, it's no biggie once you used 2 it, try and pump your self up for it (keeping your glute relaxed) think of what your gonna get out of it and how good it feels 2 have this wonderful shit in your blood... yeaaaaaa I love it...... I think I'm gonna shoot right now.