Answer:
Mechanical barriers are devices that provide a physical barrier between the sperm and the egg. Examples of mechanical barriers include the male condom, female condom, diaphragm, cervical cap, and sponge. The condom is the only contraceptive method that helps prevent sexually transmitted infections (STIs).
Answer:
A fad diet is a diet that becomes popular for a short time, similar to fads in fashion, without being a standard dietary recommendation, and often making unreasonable claims for fast weight loss or health improvements. There is no single definition of what is a fad diet. The term fad diet encompasses a variety of diets with different approaches and evidence bases, and thus different outcomes, advantages, and disadvantages.
Explanation:
<span>Poor aerobic capacity can
make it difficult to perform certain activities that involve aerobic threshold.
Examples of these exercises are brisk walking for 30 minutes, running for 20-30 minutes, or playing badminton.</span>
<span>
Aerobic capacity refers to
the ability of the cardiorespiratory system to work together in synchronicity
in able to supply the body with the enough oxygen it needs to perform muscle
contractions. This process happens through the circulatory system when the
blood flows from the heart to the lungs and into the different parts of the
body. Having a poor aerobic capacity means that the cardiorespiratory and
circulatory systems are not efficiently working together leading to poor
performance in different activities.</span>
