@Nmyownworld Nothing I can think of. My hobby(arboriculture) is pretty dangerous. I just do my best to minimize risks.
A holodeck would be a game changer though. While perhaps not truly dangerous with safeties on, doing Worf's calisthenics program, or recreating historic battles where you meet on a field with sword and shield would be hugely fun and intimidating, even with the safety factor.
That would be great fun, doing holodeck combat simulations. With me having the danger level set very, very low. Like when I’m new to a combat video game. I start with the difficulty level as low as possible. Enemy NPCs are whaling away on my character, doing little to no damage while I try and remember which button does what in the game.