This program goes over three specific exercises to make sure you are activating the optimal muscle before lifting.
1 - Flamingo - great prior to deadlifts
2 - Hamstring bridge - great prior to squats
3 - Banded foam roller wall slide - great prior to bench press.
This list is not extensive and there are plenty more exercises that can be helpful but these three are some of the most valuable ones you can do make improve your lifting.