Barbell bar bench press kills my shoulders. But the Dumbbell Bench press does not, if done correctly. Main tip to save your shoulders is to keep your arms at 45 Degrees
Setting up
– lay on a bench with feet flat on the floor.
– Pick a weight that is allows you to do at least 12 reps comfortably.
– Keeps arms at 45 degrees.
– Go slow and steady don't jerk or arch your back.
The common mistake
Not squeezing the chest, and having your arms at 90 degrees.