PH3: Layne Norton's Power And Hypertrophy Trainer, Day 52
Lighter weight doesn't mean lighter intensity! Use as much power as possible to move the barbell today.
If you're supposed to be gaining strength and putting on mass, you might wonder why you're using slightly less weight. You're finishing off the week with a rep test, so in order for you not to feel spent before you do it, I'd like you to do some reps with lighter weight.
Although you're only working at 70 percent of your 1RM, it doesn't mean that you need to bring any less energy to your lifts. Do each rep explosively.