Friend of mine(working 12 hours shift, overweight and smoking) was drinking 8-12 red bull a day for a couple of years.
One night, his girlfriend and him were having fun.
After the playoff, Dick did not go to his resting position, it stayed hard and strong. maybe fun for an hour or two.
After cold shower and ice, went to the hospital after 6 hours of still staying strong.
Took 36 hours to deflate dick(in pain), was near blood necrosis.
Doc said he had less that 10 years to live if he continue on this path.
he's good now.