im not saying it has to be a limit of 3, but i have seen some teams that have subbed more than 20 players in and out. The thing is they don't sub to give the bad player playing time, but they put those other guys in for 5-10 minutes each time just to keep their starters fresh.

their should be a limit in hs soccer. Probably like maximum 10 subs a game. Some teams are taking advantage of the subbing and not using them wisely.