VeryFit2.0 main functions include check exercise monitoring the
sleep quality intelligent alarm clock wake up etc. Application of
real-time view through physical activity and calorie consumption
monitoring the effect of walking and running. When VeryFit2.0
entered the sleep state monitoring record the deep and shallow
sleep then sleep time sleep help users to monitor their sleep
quality. Because the application needs to implement the background
to remind so has been running in the background.