Strength is a skill. Each skilled movement has its invariances, which are fundamental and unchangeable, and surface features, which are adjusted to accommodate to the immediate needs without changing the nature of the movement. Smart athletes leave the invariances alone and play with surface features. If an exercise was repeated many times, it was a standard Soviet sport practice to modify it as a training session went along. In lifting, it meant minor tweaks such as the grip width, the barbell and the feet placement, the bench incline angle, etc.
In Eastern Europe, such “same but different” moves are called specialized variety. They pack a laundry list of benefits: Accelerate gains, apparently due to recruitment of previously inactive motor units; Strengthen weak links; Improve technique; Prevent habituation (plateaus); Promote neuroplasticity; Reduce fatigue; Reduce the odds of overuse injuries.
Weightlifting Team USSR had 100 variations of the two competition lifts, the snatch and the clean-and-jerk. On the other end of the spectrum, beginners were prescribed specialized variety sparingly.
For most athletes Soviets considered ~10 exercises optimal. 2-3 of them were trained for about a month and then replaced with another pair or troika.
Prioritize exercise variations that address your weaknesses and/or improve your technique. | 
