2 iu last 5 days. Feel more energetic immediately after pinning and I have a higher amount of mental clarity. I’ve only read about lethargy but then there’s those few that experience the mental benefits. My muscles are also fuller and vascularity seemed to have increase a bit. Nothing major yet but I feel something. Hands and feet hurt, though lol. Seemed to subside after the 3rd day. Great stuff. I always fast after pinning btw