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Photoplethysmography is used to track of heart rate during a workout
Because alcohol has huge negative impact on the driving, (it slows a person's motor skills and ability to react quickly), alcohol while driving is strictly forbidden. Driving with an open container of alcohol in the car is against the law.
Drivers under 21 may not carry unopened containers of liquor, beer, or wine in a vehicle unless they are placed in the trunk.
