Several mobile apps help track your sleep to provide insight on what may wake you up at night. The best apps have a hardware component like the Jawbone Up wristband, Nike FuelBand or Beddit’s ultrathin film sensor that goes under your sheet.
An app that just tracks movement may not be completely accurate, Breus notes.
“All it’s doing is monitoring movement,” he says. “If you stop moving, it might claim that you’re awake.”