Julian wanted to brush up on his Japanese and Spanish. The popular language learning app Duolingo, with its gamified incentives and rewards, its leagues, tournaments, and power-ups, seemed like a good ...
Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. My introduction to ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results