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Lauren Giraldo's 12-3-30 Workout: Simple Path to Fitness

4/15/2026

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Summary

Story summary

Lauren Giraldo, a fitness influencer, popularized the 12-3-30 workout, which uses a treadmill at 12% incline, 3 mph for 30 minutes.
The routine is low-impact and praised for its simplicity and accessibility for beginners and those returning from injury.
Experts say it is not a magic solution, but it encourages consistency in exercise.
Giraldo's catchy branding and a straightforward approach drive its popularity.

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Story summary

Lauren Giraldo, a fitness influencer, popularized the 12-3-30 workout, which uses a treadmill at 12% incline, 3 mph for 30 minutes.
The routine is low-impact and praised for its simplicity and accessibility for beginners and those returning from injury.
Experts say it is not a magic solution, but it encourages consistency in exercise.
Giraldo's catchy branding and a straightforward approach drive its popularity.