They are most mainly consists of "Keratin"
So, option B is your answer.
Hope this helps!
D.
This is because if you’re in high air polluted areas your lungs could be affected.
If you exercise in heat you’re more likely to have a heat stroke or pass out, which are both dangerous.
If equipment is made for something specific, using it wrong could result in physical injury.
Mark Brainliest please
Answer is 3&4
Apply direct pressure on the cut or wound with a clean cloth, tissue, or piece of gauze until bleeding stops
If the wound is on the arm or leg, raise limb above the heart, if possible, to help slow bleeding.
Answer:
Explanation:
Interval training works both the aerobic and the anaerobic system. During the high-intensity efforts, the anaerobic system uses the energy stored in the muscles (glycogen) for short bursts of activity. Anaerobic metabolism works without oxygen, but the by-product is lactic acid. As lactic acid builds, the athlete enters oxygen debt, and it is during the recovery phase that the heart and lungs work together to "pay back" this oxygen debt and break down the lactic acid. It is in this phase that the aerobic system is using oxygen to convert stored carbohydrates into energy.
It's thought that by performing high-intensity intervals that produce lactic acid during practice, the body adapts and burns lactic acid more efficiently during exercise. This means athletes can exercise at a higher intensity for a longer period of time before fatigue or pain slows them down.
When your muscles are sore it can mean you worked it out, but also can mean other things like straining. If you feel a tight sensation when moving your body. It means you have worked on that area well! :}
