 MINNEAPOLIS--BUSINESS WIRE--Sleep Number Corporation Nasdaq: SNBR, a leader in sleep health, innovation, science and research, announces My Daytime Alertness. Insights from this Sleep Number 360 smart bed feature, along with the brands other wellness features, help sleepers continuously achieve higher quality sleep and improve their overall health and wellbeing. My Daytime Alertness was inspired by the trusted Karolinska sleepiness scale, a measure of self-reported sleepiness and alertnes 