Like most people who aren't getting ready for a show or something, my volume goes up or down depending on my work schedule. Right at the moment I'm working too much and so my training has suffered.
I would say right now I'll do 1 exercise per bodypart using 2-3 sets (more if I have time). I also alternate between different exercises each time I workout. So one workout I'll do Incline press for chest and the next workout I'll do Dips. Same goes for Back and legs.
If I'm pressed for time, rather than reduce the number of sets I do, I'll reduce the number of exercises. So, for example, rather than doing only one set for each bodypart, I'll drop arms in favor of more sets for chest and back.
On a side note, for me I don't really start growing until I get to the 10s and 5s. I don't skip the 15s however because my 5s are a bit heavy for my old bones and I need the rehab during the 15s so I can keep at it year after year.
You can be confident that I train by the exact same principles as everybody else doing HST.
