AC Shoulder sprain for 17 year old

AC Joint eh? Hit that shite with an injection than get surgery at the end of the year.

I've had it in both shoulders SUCKS. Trying to sleep is miserable. 2-6 weeks is appropriate. It's a slow recovery, just the bouncing from running hurts much less any impact. Had a cortisone shot in my joint that brought me to damn near tears. Swimming pool work is the best thing to build strength back

And tell him to forget about flat benching for a while.

how long before you could flat bench again?