Answer:
They influence Metabolic rate
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.
Its B. out of common knowledge and experience <span />
It is use by Eye Care Professionals To check the eyesight of a person.
If u would have visited a eye care centre u would have noticed a chart like this--
If a person can see all the letters from a distance his eyesight is Perfect.If that person misses a letter or a line from the grid eye treatment or spectacles are given to the person for improving their eyesight