Only afterwards..
If I have an urge for some jerking or sex, it only happens after I’m done with my routine for the day.
I’ve found that doing this before my routine makes my dick sleepy…like it is harder to maintain erections and even semi-erections for jelqing, and even PC flexing feels different.
I usually do the PC exercises after the routine, but sometimes my dick feels ultra smooth or something, and touching it becomes too hard to resist, and the next thing I know I’m wacking. But anything sexual happens with regards to PE routine, it’s always after I’m finished.