i def notice humalin to take longer to peak. i plan on doing the log im and the humalin subq. thats why im taking a large total dosage, to compansate for the slight loss of absorbtion with shootin the log im. I was using log mid workout for a while, like 20 mins before i finished. didnt notice much of a difference. I was thinking about using humalin n but desided agaisnt it as i plan on taking slin throughout my whole cycle, not 4 weeks on 4 off like msot do and didnt want my body to be supressed for so long everyday, although i think the chances of it causing any problems are very slin, id rather not take a chance with that.