When I do my workout, I warmup with a wet, hot towel around my penis for 10 min... in between each direction of stretches I massage my penis... After this I put on some lotion or whatever and get somewhat aroused so that I have blood in my penis... I think theres kinda a jump from the amount of blood in my penis when I can and can't jelq... when I can feel that there isblood in my penis taht i can't move at all... like it almost seems like an erection, then I stop and wait for it to go back down... maybe I get erect becuase im a horny college kid : P
hopefully this helpls you... maybe you do something differently in your workout... ive tried to say exactly what ii do and describe my erect...ness? when im jelqing