This video demonstrates how to tie an Alpine Butterfly Knot using the hybrid method, combining speed with reliability for a clean, symmetrical loop. It explains each step clearly and shows why this ...

Getting good sleep is critical. A 2018 study found that people who sleep for five to six hours are 19 percent less productive than people who regularly sleep for seven to eight hours per night. People ...

Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...