I've mentioned that it's turning into a pretty busy time of the year which makes Bat-training that much more difficult. So in order to make the best use of my time, I tried to think of something I could try that wouldn't require practice (unlike boomerangs or ambidexterity) or really any time investment at all.
So I decided to get rid of any addictions in my life. It's pretty canonical that as Bruce Wayne, the Batman fakes drinking at parties so that he can keep up his playboy persona while being in peek physical condition.
What other drugs would Batman refuse? It depends a lot on who's writing the Batman character. Does he do drugs just to see what it's like to be the Joker? Maybe? Or does he take performance enhancing drugs? No? Then no drugs at all maybe? Not even coffee?
So here are my thoughts. Batman would never let allow himself to be addicted. The entire point of Bruce Wayne dressing up as a Bat and beating-up criminals is to feel like he has some measure of control over a world that he really feels he has no control over at all.
So this leads me to think that he would use whatever drugs necessary to make himself more effective but would never allow himself to become addicted to any of them. If he ever felt that any drug had gained power over him in any way, he would use some of that iron determination to break the addiction.
So here's what I've begun doing. I've thought about all the drugs that I take (mostly caffeine but also small amounts of nicotine and alcohol) and I stopped taking them. I stopped on the 1st of December and I will try to go for a whole month. Then at the end of that month I will binge on all the drugs that I had quit on and try to operate normally while intoxicated with these everyday drugs.
This personal experiment marks the start of gaining the toxicology knowledge that Batman must have.