There's a growing body of literature dedicated to why people procrastinate - and how to stop it.
But Wharton professor Adam Grant argues that we should expand our conception of procrastination to include not just laziness, but also waiting for the right time. In other words, procrastination can help boost creativity because you give yourself a chance to develop your big idea.
2. Biting your nails
Researchers followed about 1,000 kids starting when they were five years old. When the kids were five, seven, nine, and 11, the researchers asked their parents whether they bit their nails or sucked their thumb. About one-third of the kids displayed one or both habits.
When the kids were 13 and then 32 years old, the researchers performed allergy tests. Sure enough, the group that had habitually bit their nails and/or sucked their thumb as kids were less likely to have developed allergies.
At the same time, one of the study authors advised parents not to encourage nail-biting or thumb-sucking in their kids.
While nail-biting doesn't typically cause long-term damage, it can damage the skin around the nail, making you more susceptible to infections. Meanwhile, if thumb-sucking continues past when a kid's permanent teeth come in, it can change how the teeth line up.
3. Running late
Being chronically tardy can interfere with both your personal and professional relationships, making you look disorganized or worse, disrespectful.
"Many late people tend to be both optimistic and unrealistic and this affects their perception of time. They really believe they can go for a run, pick up their clothes at the dry cleaners, buy groceries and drop off the kids at school in an hour."
In other words, late people hope for and expect the best - which can be a double-edged sword in daily life.
No one wants to be that friend who goes on and on about his annoying coworker, the rain, and the lousy service at the restaurant where he just ate.
Meanwhile, recent research cited in The Atlantic found that those who complain more mindfully - meaning they have a specific end result in mind - are happier than those who simply vent.
If you need to complain, there's a way to express some negativity without turning off everyone around you or exacerbating the situation. According to psychologist Guy Winch, there's a "right" way to gripe.
"An effective complaint is about an issue that can be remedied, and is addressed to someone who has the power to fix it."
5. Chewing gum
It's rude to do it in a job interview, so don't. But when you're sitting alone, it could be a key to productivity and relaxation.
Multiple studies suggest that chewing gum helps you feel more alert - one study even found that people who chewed gum performed better on an intelligence test than people who didn't.
Other research suggests that chewing gum boosts mood and reduces levels of the stress hormone cortisol.
6. Keeping a messy desk
If piles of papers are toppling over onto your coworker's desk, it might be time to tidy up.
But assuming you can keep your mess to yourself, there could be benefits to the disorganization. Recent research suggests that messiness prompts people to be more goal-oriented because we're motivated to seek order somewhere.
In other words, simply the sight of a sloppy workspace could make you more productive.
Again, when you're in a meeting with your boss, it's not the best idea to be squirming in your seat.
But tapping your leg or wiggling your fingers while you're seated at your desk could help you stay healthy. One study found that women who reported fidgeting more while at work had a lower mortality risk than women who said they fidgeted less.
In fact, fidgeting seemed to make the association between long sitting times and mortality disappear.
No, this is not an excuse to invite your best friend over to bash your other best friend's new haircut.
Research suggests that gossiping in order to help someone else can make you feel better.
In 2010, researchers published some attention-getting findings suggesting that mind-wandering can make you unhappy.
But spending a few minutes deliberately letting yourself zone out can also make you more productive and creative.
For example, one study cited in The Harvard Business Review found that allowing your mind to wander for about 12 minutes while you're working on a difficult task can help you find a solution when you return to it.
10. Using filler words
Um, so it sounds totally unprofessional to, uh, use filler words in every sentence, right?
But a recent Quartz article highlights research that suggests words such as "um" and "uh" help listeners understand and remember what you're saying.