Why Multitasking Is Bad for Your Brain

iStock
iStock

Have you ever felt that you get less done when you multitask? You’re not imagining things. In fact, Larry Kim, founder and CEO of Boston-based Facebook Messenger marketing company MobileMonkey, points out in an article for Observer that you’re actually hurting your brain by juggling several undertakings at once. 

Since we aren’t wired to focus on more than one thing at a time, cramming multiple tasks onto your to-do list will actually slow down your cognitive processing. You’re unable to organize your thoughts or filter out unnecessary information. As a result, your efficiency plummets—and so does the quality of your work. In fact, one study at the University of London revealed that subjects who multitasked while performing brain-intensive tasks demonstrated IQ drops similar to people who are sleep-deprived or smoke marijuana. Still not convinced? Multitasking is also linked to increased cortisol production, a stress hormone that leaves us feeling tired when we need energy to concentrate [PDF]. 

Once we start multitasking, it’s hard to stop. Each time we complete a small task—sending an email, tweeting, etc.—our brains are blasted with a dose of the reward hormone dopamine. It feels good, which means we’re likely to keep bouncing back and forth between tiny, unimportant goals without getting anything major done. And even if we’ve set aside time to delve into a time-consuming project, the mere knowledge of a new email or text lurking in our inboxes can keep us distracted. According to some research, this constant anticipation can actually lower our IQ by as much as 10 points.

One study from the University of Sussex in the UK indicates that forms of multitasking can cause cognitive damage, Kim warns. MRI scans showed that subjects who consumed multiple media forms at once had less brain density in the anterior cingulate cortex, the region associated with empathy and emotional control. Scientists still haven't concluded whether or not multitasking is permanently harming our brains. However, there's overwhelming evidence that it harms our lives.

How can we break this insidious cycle and form new habits? “Protect yourself from the multitasking mental massacre by establishing an e-mail checking schedule,” Kim advises. “Commit yourself to checking emails only three times a day (maybe when you get in to work in the morning, at lunch time, and before leaving work at the end of the day). Turn off texting notifications and choose specific times to check your phone as well.” This way, you can buckle down and focus on the things that really matter.

[h/t Observer]

7 Top-Rated Portable Air Conditioners You Can Buy Right Now

Black + Decker/Amazon
Black + Decker/Amazon

The warmest months of the year are just around the corner (in the Northern Hemisphere, anyway), and things are about to get hot. To make indoor life feel a little more bearable, we’ve rounded up a list of some of the top-rated portable air conditioners you can buy online right now.

1. SereneLife 3-in-1 Portable Air Conditioner; $290

SereneLife air conditioner on Amazon.
SereneLife/Amazon

This device—currently the best-selling portable air conditioner on Amazon—is multifunctional, cooling the air while also working as a dehumidifier. Reviewers on Amazon praised this model for how easy it is to set up, but cautioned that it's not meant for large spaces. According to the manufacturer, it's designed to cool down rooms up to 225 square feet, and the most positive reviews came from people using it in their bedroom.

Buy it: Amazon

2. Black + Decker 14,000 BTU Portable Air Conditioner and Heater; $417

Black + Decker portable air conditioner
Black+Decker/Amazon

Black + Decker estimates that this combination portable air conditioner and heater can accommodate rooms up to 350 square feet, and it even comes with a convenient timer so you never have to worry about forgetting to turn it off before you leave the house. The setup is easy—the attached exhaust hose fits into most standard windows, and everything you need for installation is included. This model sits around four stars on Amazon, and it was also picked by Wirecutter as one of the best values on the market.

Buy it: Amazon

3. Mikikin Portable Air Conditioner Fan; $45

Desk air conditioner on Amazon
Mikikin/Amazon

This miniature portable conditioner, which is Amazon's top-selling new portable air conditioner release, is perfect to put on a desk or end table as you work or watch TV during those sweltering dog days. It's currently at a four-star rating on Amazon, and reviewers recommend filling the water tank with a combination of cool water and ice cubes for the best experience.

Buy it: Amazon

4. Juscool Portable Air Conditioner Fan; $56

Juscool portable air conditioner.
Juscool/Amazon

This tiny air conditioner fan, which touts a 4.6-star rating, is unique because it plugs in with a USB cable, so you can hook it up to a laptop or a wall outlet converter to try out any of its three fan speeds. This won't chill a living room, but it does fit on a nightstand or desk to help cool you down in stuffy rooms or makeshift home offices that weren't designed with summer in mind.

Buy it: Amazon

5. SHINCO 8000 BTU Portable Air Conditioner; $320

Shinco portable air conditioner
SHINCO/Amazon

This four-star-rated portable air conditioner is meant for rooms of up to 200 square feet, so think of it for a home office or bedroom. It has two fan speeds, and the included air filter can be rinsed out quickly underneath a faucet. There's also a remote control that lets you adjust the temperature from across the room. This is another one where you'll need a window nearby, but the installation kit and instructions are all included so you won't have to sweat too much over setting it up.

Buy it: Amazon

6. Honeywell MN Series Portable Air Conditioner and Dehumidifier; $400

Honeywell air conditioner on Walmart.
Honeywell/Walmart

Like the other units on this list, Honeywell's portable air conditioner also acts as a dehumidifier or a standard fan when you just want some air to circulate. You can cool a 350-square-foot room with this four-star model, and there are four wheels at the bottom that make moving it from place to place even easier. This one is available on Amazon, too, but Walmart has the lowest price right now.

Buy it: Walmart

7. LG 14,000 BTU Portable Air Conditioner; $699

LG Portable Air Conditioner.
LG/Home Depot

This one won't come cheap, but it packs the acclaim to back it up. It topped Wirecutter's list of best portable air conditioners and currently has a 4.5-star rating on Home Depot's website, with many of the reviews praising how quiet it is while it's running. It's one of the only models you'll find compatible with Alexa and Google Assistant, and it can cool rooms up to 500 square feet. There's also the built-in timer, so you can program it to go on and off whenever you want.

Buy it: Home Depot

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This Innovative Cutting Board Takes the Mess Out of Meal Prep

There's no way any of these ingredients will end up on the floor.
There's no way any of these ingredients will end up on the floor.
TidyBoard, Kickstarter

Transferring food from the cutting board to the bowl—or scraps to the compost bin—can get a little messy, especially if you’re dealing with something that has a tendency to roll off the board, spill juice everywhere, or both (looking at you, cherry tomatoes).

The TidyBoard, available on Kickstarter, is a cutting board with attached containers that you can sweep your ingredients right into, taking the mess out of meal prep and saving you some counter space in the process. The board itself is 15 inches by 20 inches, and the container that fits in its empty slot is 14 inches long, 5.75 inches wide, and more than 4 inches deep. Two smaller containers fit inside the large one, making it easy to separate your ingredients.

Though the 4-pound board hangs off the edge of your counter, good old-fashioned physics will keep it from tipping off—as long as whatever you’re piling into the containers doesn’t exceed 9 pounds. It also comes with a second set of containers that work as strainers, so you can position the TidyBoard over the edge of your sink and drain excess water or juice from your ingredients as you go.

You can store food in the smaller containers, which have matching lids; and since they’re all made of BPA-free silicone, feel free to pop them in the microwave. (Remove the small stopper on top of the lid first for a built-in steaming hole.)

tidyboard storage containers
They also come in gray, if teal isn't your thing.
TidyBoard

Not only does the bamboo-made TidyBoard repel bacteria, it also won’t dull your knives or let strong odors seep into it. In short, it’s an opportunity to make cutting, cleaning, storing, and eating all easier, neater, and more efficient. Prices start at $79, and it’s expected to ship by October 2020—you can find out more details and order yours on Kickstarter.

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links.