Answer:
Wrist and chest Monitor
Explanation:
The wrist and Chest Monitor would be the most useful in determining whether you are staying within your target heart rate zone during a workout because during workout or any kind of activity to get the heart rate of an individual it is mostly gotten from the chest and wrist of the individual.
Calorimeter is used to measure the amount of calories in the body or the amount of calories burnt during workout of the individual while the wrist and chest monitor measures the heart rate.
The veins I think maybe I’m wrong but I’m sure it the veins in your hands
You don’t feel pain, they can show inside of the human body in a easy and effective way.
The soda can wear away ur enamel and not brushing them can give discoloration also they can become highly sensitive to hot and cold
