Proof Engine Verification: Mouth taping during sleep greatly improves sleep quality and reduces sleep apnea.

Verdict: PARTIALLY VERIFIED - **SC1 ("greatly improves sleep quality") — FAILS:** Only 2 independent studies confirmed via verified citations; the standard threshold of 3 was not met. Neither study used validated sleep quality instruments (PSQI, actigraphy); both measured AHI and snoring as proxies. The "greatly" qualifier is unsupported by the literature. - **SC2 ("reduces sleep apnea / AHI") — HOLDS:** 2 independent peer-reviewed studies confirmed a statistically significant AHI reduction. The threshold was set to 2 base