Walk run treadmill workout

Get fit with these effective walk-run treadmill workouts. Boost your stamina and burn calories with these top ideas for a dynamic cardio session.
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TikTok is talking about influencer Lauren Giraldo's "12-3-30" treadmill workout, which involves walking at a level-12 incline for 30 minutes at 3 miles per hour. Here's what fitness experts think about the "12-3-30" workout.

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Courtney Johnson