Been running 4iu GH a while now and I keep seeing IGF-1 LR3 come up as the next thing to add post workout. The pitch is you pin the muscle you just trained at 20 to 100mcg and get local growth in that muscle, some blokes even bilateral pin the worked area rather than one site. What I want from anyone who has actually run it is whether that localised growth genuinely showed up or if it was just the pump for a few hours and nothing you could point to weeks later. Is it worth the money and the extra pin or is it one of those things that stays niche for a reason?