I have this tendency to ask a lot of irrelevant questions when I see a sentence like "X wakes up, brushes his teeth, and takes a shower." For example, I'd wonder if the person uses the toilet first, what color his toothbrush is, and where in the bathroom does he hang his towel. Among other things.
Normally, I'd find the example sentance something I wouldn't want to see in a story, not because it shows no detail, but because it's too mundane, unless the next sentance has someone re-enact the famous scene from Psycho. They're ordinary happenings on their own in an ordinary, boring day, and it's best to skip right to the point where X has already headed off to work and gets the first clue that Y in the next cubicle is really a werewolf.
As others have noted, it's best if these events reveal character, set the mood, or advance the plot. The waking up, showering, and toothbrushing would ordinarily not do this. So if you're even putting them in, the details need to show something about the character, plot, or mood. Perhaps X is trying to impress her new boss and spends far more time grooming than usual, and the showering conveys this anxiety. Or X woke up and his first thought was, "How did I get up on the roof, and where's my shirt?" Or as X goes about his morning routine, little things about the bathroom and bedroom seem out of place and things seem a little less and less right until X opens the master bedroom door and realizes that he's been abducted by aliens who have tried to create a replica of his apartment and didn't quite get it right. The details shouldn't be mere window dressing.
If you need the details to make the character come alive, write down the answers, but don't bring them into the story until you know they interest the reader. Often a posession in and of itself may not say all that much about a character, but the process of how the character decided to acquire the posession might say a lot.
For example, suppose you decide that X owns a motorcycle. And X doesn't just own any motorcycle. He owns a 2004 Suzuki GSX-R 1300 Hayabusa with a custom metal flake black paint job, chrome plated billet wheels, the speed limiter removed, an extended swing arm, Corbin seat, and Yoshimura pipes. To go with this, he's bought a Dainesse leather suit, Alpinestars boots, Held gloves, and an Arai helmet painted to match the bike. That's a lot of detail. But what does that say about X? Other than that he's got a lot of money he can spend on this, not much on its own. A better question is
why he owns this bike, what X was thinking when he bought it.
For those of you not into motorcycles, the bike I've described is a sport bike with around 160 to 180 horsepower that has been modified either for show or for drag racing. That kind of power can be quick in a compact car, and in a bike it's not easy to control at all. It would take a very experienced rider to use this to anything near its potential in anything but a straight line, and a pretty good one to use it to its fullest in a straight line. One of the better ways to describe such a machine is a bit full of adverbs: "The problem with this bike is that it will immediately do exactly what you accidentally tell it to do." I can't take credit for that line as it's one that's been passed around a lot on biker forums and nobody knows where it came from.
Perhaps X simply has years of motorcycle experience and wanted something sporty that was still reasonably comfortable for long distance rides. Which would, well, sound like the reason the Incredibly Competant Man of Action stock character might give. But if X fits that stereotype, he might as well have a bike that goes with it.
Or perhaps X had never ridden on a motorcycle before, heard some friends talking about how the Hayabusa was the ultimate bike, and the next day he got a learner's permit, then bought the 'Busa the very next day. An action like this would show that he's reckless, doesn't consider his own personal safety all that much, is easily swayed by his friends, and also pretty reckless with his money. The fact that his friends didn't try to stop him from buying an obvious death machine also says a lot about
their character.
The details themselves may not be nearly as interesting as
why these details are there. Even if you don't show the story behind it, keep it in mind and remember what your character is capable of. But something like the color of the toothbrush probably doesn't have the same kind of story behind it, or if you can pull off such a story, it might deserve its own scene to itself.