For me it's not so much the blood levels but the volume of injection. Let's say you wanted to do 700/700 tren/prop per week. That would mean 200 prop and 200 tren EOD. Not sure if you've done tren before, but 200mg shots are sometimes a bit rough. The shit is hella strong! I'm on 150/day and if I skip and do a 300mg shot, my night sweats go through the roof for a couple days. Just some thoughts. If you're doing a relatively low dose, it's not quite as bad.