I usually wait two hours at least when in ripping for that day...I got some like real fish scale a few weeks ago and I was at work...was on the phone. Usually would do double the amount and do half , and save the half for a "bathroom break " in a couple hours. Would hide the rig in the toilet paper rolls lol. I , what my friend called it, fished out on my ten minute break at work. Lost all feeling in my legs and everything , fell to the ground , thought I was about to die. In 15 seconds I was able to walk again but felt weak. Good to go in five minutes lol. Was shaking like crazy . Never been so scared in my life. Layed off the coke for the rest of that night haha but back at it tomorrow morning. Shit was making my heart explode it felt like. Two hours is good to get a decent rush. 12 hours for a pretty decent reset on the high. Hope it helped. If you fish out, sit down, cold air in car like ac is good. Hands over head and breathe slow and relax. Might feel like your having a heart attack but probably not lol