During my time at Princeton, ages ago, we were ranked second behind UCLA. Long, long ago. Obviously we had the best team in the Ivies, but everyone said we also had the second best with our 6-10. The starters would be lazy and be up 2 to 5 at the 10 minute mark. All 5 got pulled and 6-10 went in. You can bet they played hard, and they had played as a team every practice. The other team never knew what hit them. by the half we were up 20 to 25, game over. I think Bruno did this at DePaul for a while, might still. It does work with the right people. When 5 starters sit for 10 minutes and watch the subs play way better and way harder, and they see coach smiling, it sends a big message. And it sure keeps people's legs fresh.