A study reveals that people who exercise three times a week live longer. What are two or more confounding variables that could have had an effect on this claim?

Stem cells can develop into many different cell types in the body. They act as a repair system and refill other cells as long as you are alive. When these cells divide they can stay as they are or become another cell with a more specialised function, like a muscle cell or a red blood cell.

Physical health is one derived from individual sports and includes all of the following except improvedawareness.

What is Physical health?

This is defined as the physical well being of an individual and is promoted through exercises and good diet.

It helps to build healthybones and lower cholesterol but isn't concerned with emotional states such as awareness hence option D was chosen.

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Answer:

You're beautiful and amazing no matter what. Body size shouldn't be what makes you consider yourself as pretty it's your personality. Now walk up to a mirror like the bad b ! sh you are, and repeat after me, I AM THAT B ! SH, BEEN THAT B ! SH, STILL THAT B ! SH, & WILL FOREVER BE THAT B ! SH, & keep repeating that sh ! t til its embedded in your head.

Answer and Explanation: We know that starting an exercise regime is very demanding and physically challenging job. All kind of exercise regime includes strength games as well as cardiovascular games. During cardiovascular games heart and lungs play very important role, your heartbeat increases and a lot of pressure is buildup on your lungs. Any medical condition in which you cannot use full capacity your heart and lungs is to be taken into consideration before planning any such activity. Some of the medical conditions are:

• Cardiovascular diseases: Medical conditions related to heart can cause sudden death upon extreme exertion.

• Respiratory diseases: Medical conditions such as acute lung infections and asthma can kill a person by choking him/her if involved in extreme strenuous games.

• Arthritis issues: Your bones becomes weak and are prone to break down in no time, thus they are advised not to put extreme strain on bones to avoid any irreparable damage.