I can come at this from either direction, since both of the following statements are true: a) this system reduces the frequency with which unexpected events happen in the first place, and b) the unexpected events that do take place become a lot easier to handle with the system.
a) The fact that I work in conscious 90-minute chunks allows me to take steps to prevent myself from getting distracted. For example, at the planning phase of a 90-minute session, I'll usually activate a 90-minute website block using an app called Freedom [1] and turn on DND mode across all my devices. Then when the session is over, I can lower all these defenses guilt-free.
b) Say I have a friend or relative staying over, which is pretty distracting. I communicate with them upfront: "Hey, I have this routine where, first thing every morning, I do a couple hours of focused work and don't do any socializing. I even wear headphones to block distracting noise. It's not you, it's me. So would you mind just doing your thing for like an hour or two when you wake up tomorrow morning? Then we can chill and go for brunch." etc.
As far as being sick? I guess it depends on what kind of sickness we're talking about lol. I've gotten COVID, been a little hungover, and other aberrations, and usually had no problem carrying myself through just a single work session. (Notably, my first 90-minute session of the day is a routine I've deeply internalized through repetition, so it requires very little mental effort.)
a) The fact that I work in conscious 90-minute chunks allows me to take steps to prevent myself from getting distracted. For example, at the planning phase of a 90-minute session, I'll usually activate a 90-minute website block using an app called Freedom [1] and turn on DND mode across all my devices. Then when the session is over, I can lower all these defenses guilt-free.
b) Say I have a friend or relative staying over, which is pretty distracting. I communicate with them upfront: "Hey, I have this routine where, first thing every morning, I do a couple hours of focused work and don't do any socializing. I even wear headphones to block distracting noise. It's not you, it's me. So would you mind just doing your thing for like an hour or two when you wake up tomorrow morning? Then we can chill and go for brunch." etc.
As far as being sick? I guess it depends on what kind of sickness we're talking about lol. I've gotten COVID, been a little hungover, and other aberrations, and usually had no problem carrying myself through just a single work session. (Notably, my first 90-minute session of the day is a routine I've deeply internalized through repetition, so it requires very little mental effort.)
[1] https://freedom.to