Goto the boo boo band aid section, uptop theres a sticky on LIG POPS and BURNS by me.
Tells ya everything ya need to know, but in a nutshell here ... lig pops dont mean that gains is coming, they are just like when ya pop the knuckles of ya hand, its just pockets of AIR trapped around and under the ligaments/tendons so when they move the air is forced out and hence a pop comes, it means nuthing ... anyone can get them.
Some people are more prone to them than others, I dont know why ... its same with knuckle poping, some can do as well as some can not.