"香港有好多人 在2300至0700開緊工/正常活動緊㗎!"
I was also one of them long time ago!
May be you did not read 1470#
My first question was ... I've asked the epc bro if he/she works for overnight shift. If the answer was yes, then I would say, ok it's inevitable. But the answer was NO, that means he/she would still has work to do during the day. And that's why I was advising ... need to have sufficient rest at night.