When I first started coaching, I read a lot about Ethan Reeve, the head strength coach at Wake Forest University. He's not flashy, but he follows sound principles and makes his athletes work, something most need more of.
Coach Reeve loves the one-arm bench press. As a standard, he wants his athletes to press a 100-pound dumbbell for 5 reps. It offers a lot in the way of core anti-rotation strength. It also goes a long way in teaching full-body bench press tension.
Try to one-arm bench without braced lats, solid air, and your feet pressed into the floor.
Within the realm of training for greater strength, muscle mass, and endurance lies an area of science that remains relatively untapped: Neuroscience. It's indeed the uncharted waters in the vast ocean of the science and practice of resistance training. That's because so little is known about how the nervous system actually works.