I focus, and hyperfocus, without any help from a stimulant. In fact, I am far more likely to go deep into a rabbit hole, of useful or wasted time, when I am ti

I focus, and hyperfocus, without any help from a stimulant. In fact, I am far more likely to go deep into a rabbit hole, of useful or wasted time, when I am tired. But with a stimulant it is far easier at any time to choose to focus on ordinary important tasks, follow through, and enjoy getting necessary things done. I.e. improved executive function.