Not injection related, but I cleaned a barbell last week (pull from the floor, jump and catch it on your shoulders) and walked it over to the rack on my shoulde

Not injection related, but I cleaned a barbell last week (pull from the floor, jump and catch it on your shoulders) and walked it over to the rack on my shoulders, and I felt like I was about to faint after I’d taken 5 steps. Vision started going dark, head got fuzzy and everything. Luckily, I recovered and racked it safely. It was my own fault I suppose, cleaning so far from the rack, but I wondered what mechanism exactly led to that moment. If I took the bar straight from the rack to my shoulders I could walk around with it no problem, but the clean motion itself probably caused those neurons to activate.