For upper body I lift 6 - 7 reps sometimes & I like to do high rep (14 +), changing tempo lifting at other times. (fitnessblackandwhite.com)
Weak, unresponsive traps will make you more vulnerable to upper body lifting injuries such as shoulder impingement, scapular winging and scapular dyskinesis. (fitnessandpower.com)
Tier 1: After each workout, add 5lbs / 2.5 kg for upper body lifts and 10lbs / 5 kg for lower body lifts for each consecutive workout. (strongapp.io)