Today on my last set on bench my muscles weren't fully exhausted,

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n.b. my pee is clear so it's not rhabdo

>>39640510
Only thing that comes to mind is lactic acid but at only 5 reps per set I don't think the burn from lactic acid is going to do much. Maybe your form slipped

>>39640575
How do you know it was 5 reps per set

>>39640556
What are those pictures

>>39640659
Ops use of set and rep are inconsistent so I assumed 5x5. If you go low weight high rep, like 12reps for 4sets then you will get heavy lactic acid buildup which causes the burning pain many people associate with a good workout. iirc you will get stronger doing high weight low reps

>>39640729
yeah I mean the first rep of my fifth set, after resting a bit. it wasn't a form error like my joints were fucked, my muscle actually hurt