Do you think dips could ruin shoulders in time as well? This is interesting as i was researching into Behind The Neck Shoulder Presses recently. This is an old school exercise that many nowadays stay away from and stick to in front of the neck press only. Then i researched further and it appears the best method is to do both in front and behind the neck. And once again like many exercises, the reason some people got injured doing behind the neck presses was a mixture of bad form, going to heavy too soon and too lower rep range just to name a few. Seems the tried and trusted old school exercises keep on coming back as they were good back then and they still are good.