slin question

hey guys my buddy is having a problem
hes says that he does his slin 4x's a day on his high carb day
and the next day he is feeling side effects sweating, cold, shakey
he is using humalog
i cant figure it out because humalog is fast acting and should totally be out of your system within hours

I agree it is probably not the slin as the log is a very rapid acting slin. My question is why 4x a day?? Why not once post training? Just curious as I have never seen slin run like that before???

we are doing it as a loading day
so its only being done 2 times a week
on high carb days

Given the way insulin acts, IMO, I don't believe that is a very effective way to use it. I didn't see dosages posted, how much is he taking each time? 4 times a day is going to be cumulative as you go, and the slin is not necessarily going to be cleared at the same rate for each individual. The fast acting insulins can stay active for as long as six hours in some people even if it is only partially active during those last two hours.