I was just checking out this site that shows where to inject. I noticed the guy they have stabbing himself is using big needles. Like two inches long or something like that. Hes a big dude though so it stays in the muscle. Im a smaller guy. Im 6' and like only 165-170lbs. Pretty thin. Im a little nervous about using such big needles. They might go through and hit the bone. Can I use smaller needles than that? Also how do I know which size will fit nicely into my muscle? Thanks in advance. -J

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