Imo, splitting 4 IU of HGH into a morning and evening dose just makes the whole thing smoother. Smaller doses mimic natural GH pulses better, keep IGF-1 levels more stable throughout the day. And reduce side effects like water retention, sleepiness, and insulin spikes. Overall it just feels more balanced and easier on the body compared to taking all 4 IU at once.
I just pin 6-7iu in the evening. Sometimes its 10pm, sometimes its 5pm, sometimes 8pm. Ive heard mixed opinions on splitting vs one time dosing. I think in the end, it'll all lead to same result. But again, very dependent on the individual