What changes

Short daily meditation programs are often associated with a 10–25% relative drop in perceived stress scores over 8 weeks.

When this tends to work

• Conditions similar to: Healthy adults, app-guided programs, 2015–2024 RCTs
• You can measure Perceived stress scale scores reliably
• The intervention is implemented consistently, not half-measured

When to be careful

• Your audience or product differs materially from the cited context
• Compliance costs or second-order effects outweigh the lift
• Evidence label is meta_analysis—treat wide ranges as planning bands, not promises

Practical takeaway

Use the cited range for prioritization and test design. Verify against your own data before scaling.