Daily caffeine intake tracked by new app
Jawbone, a technology company, launched a new smartphone app that tracks daily caffeine intake with the aim of predicting its long-term effects on sleep. The idea is a result of data crunching of 1600 Jawbone's customers who use a wearable band to track physical activity and nutritional intake throughout the day. It found that users do not always get enough sleep due to the ubiquity of smartphones, email and high caffeine intake. The new app allows users to log each caffeine intake from coffee, tea, energy drinks or even chocolate, and then calculates their alertness from "wired" to "sleep ready". After tracking users' caffeine intake for 10 days, the app is able to estimate how much sleep is lost due to caffeine.