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October 1, 2015 7:00 AM EDT

Tech geekery and fitness have historically gone together like socks and sandals: they just don’t.

But conventional wisdom no longer applies now that we’ve all got devices in our pockets. If the apps below are any indication, this geekery can help us get in the best shape of our lives. OK, fine, maybe just slightly better shape than we’re used to. But still.

Check out the best apps to give personal trainers a run for their money.

Contact us at letters@time.com.

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