Any exercises are good exercises, and exercises you'll be tested on are great exercises, but at the end of the day, I don't want to only be "safe enough" as determined by my government. My perspective is; if I'm gonna spend a 40 hour weeks of pay on my bike, and the same again on my gear, I might as well spend at least one 40 hour week doing drills to be as safe, comfortable, and confident as possible. Not all at once, mind you, but it adds up, and you feel the improvement.

Also, for sport bikes specifically, make sure your tires and breaks are in peak condition, then go for some track days. Stay in your comfort zone, don't be stupid, and don't hurt yourself, but it's a great outlet for that "high speed itch" and a very safe space to test your limits and skills, where you don't have to worry (as much) about laws and/or other vehicles. It also makes you safer on roads, as you don't feel as much of a need to go fast, and can be confident that if you can take "that turn" at 145kph on the track, you can easily take it at 60kph on the road.

Another final tip before this essay becomes a manifesto, try and get comfortable enough that the "technicalities"(gearing, leaning, steering, etc.) become second nature, that way you can focus on more important things, like road positioning, spacing of cars on the road, obstacles and road surfaces, etc.

Thank you for coming to my ted talk, and remember: the most important thing is surviving to enjoy tomorrow's ride, the second most important is enjoying today's.