Before revision: Wearables) People can track their sleep through smartphones with consumer sleep-tracking apps, wearable devices, or a combination or both consumer sleep-tracking apps and wearable devices.
After revision: Consumer Sleep-Tracking Devices (Smartphones, Mobile Apps,Wearables) People can track their sleep through smartphones with consumer sleep-tracking apps, wearable devices, or a combination or both consumer sleep-tracking apps and wearable devices.