To set your intensity level, you need to
a. use your maximum heart rate, which is determined by subtracting age from 220b. exercise for a minimum of 60 minutes each sessionc. increase your resting heart rate by increasing the weights you lift each weekd. determine what it is by subtracting your age from 2,000 calories

To set your intensity level, you need to use your maximum heart rate, which is determined by subtracting age from 220.

Explanation:

To calculate the intensity of physical exertion it is important to know the Reserve Heart Rate or the Karvonen Method as follows:

Just subtract from 220 your age in years: HRmax = 220 - age (years)

The correct way is to place the middle and index fingers of your right hand on the inside of your left wrist, two inches below the base of your thumb. As soon as you feel the pulse of the radial artery, watch your watch and based on the time of 60 seconds, count the number of times you feel the pulse of the artery.

To do this, subtract the resting heart rate from the maximum heart rate.

since you have not provided the options here i   am going to give you general overview about hormone.hormone are actually the part of endocrine system in our body and produced by the endocrine glands. the hormones act like a chemical messenger   within human body. once produce by the glands they   travel through the blood stream and reach at specific or target tissue and organs   which result in control of our body function. the hormones are specific in their work and work on only the targeted tissue or organ   . with the of hormone endocrine system regulate the heart rate , metabolism, our mood and   growth as well as the development and even the sleeping cycle etc. they actually are the messenger for body cell and organs .

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