18.104.22.168 Strength specific work – Overhead
Care must be taken when planning for overhead strength. By virtue of being a smaller muscle group with a less stable structure behind it, shoulders are very prone to injury.
I recommend training specific overhead accessory work no more than every other day except in exceptional circumstances.
If you have a complete program in place you should already be getting decent loading of the overhead range via the classic lifts; snatches and jerks. Extra accessory work should be added in after careful consideration if the overhead range is found to be weak.