The original Zombies, Run! [Free] has been free since 2015, and if you've never tried it and have any interest in running, you really should. Instead of how a lot of running apps will just have you running and walking based on timed intervals with chimes and maybe some voiceover to tell you what to do next, Zombies, Run! does basically the same thing but it's cleverly disguised through an in-game narrative where you're running around inside of a zombie apocalypse. It's hard to really capture in a trailer, but check this one out to get an idea of what it's like:

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While Zombies, Run! is more of a general workout app, Zombies, Run! 5K Training is a targeted training app with the goal of getting you running a 5K in 8 weeks. (Similar to the bazillion Couch to 5K programs out there.) The idea behind a Couch to 5K program is gradually advancing time splits. On the first day you'll be mostly walking with a few short bursts of running, and before long you're primarily running, taking a few breaks walking, then eventually just running non-stop. If you stick with a Couch to 5K program, the progress you see feels a little magical. Personally, what always makes me eventually get bored of these different running programs is it's hard for me to find things interesting enough to listen to while running that it distracts me from the fact that I'm running for 30 minutes plus. The way Zombies, Run and Zombies, Run! 5K Training attack this pro...