Think of it this way. Say unaided, you can get to 85% proficiency in 6 hours and that's about all you can sustain. With smart drugs, you only get to 75% profi

Think of it this way. Say unaided, you can get to 85% proficiency in 6 hours and that's about all you can sustain. With smart drugs, you only get to 75% proficiency in 6 hours but can keep going and will hit 95% in 9 hours. Think of it like a pick up truck with two gas tanks. It is less efficient than a small car but because of the larger tank it has more range.