Page 59 - Science - 5

EXERCISE
Physical exercise makes our body

strong and healthy. It develops our
muscles and increases our stamina.
Exercise makes our heart beat
faster, thereby improving blood

circulation. Cycling, swimming and
jogging are also good exercises.

REST
After the whole day's work and play, our body needs rest. A good sleep helps

to refresh a tired body. We should take at least 6 hours sleep in a day. When we
rest, our muscles relax and our breathing and heart beat slow down. A good
sleep also gives our body the time for growth and repair of its cells.

Knowledge Plus

s Apples are more efficient than caffeine for waking you up in the morning.
Apples are part of the rose family.

s Strawberries are the only fruit which has seeds on the outside.

Scientific Terms

Obese : very fat, in a way that is not healthy
Humidity : the amount of water in the air
Hygiene : the practice of keeping yourself clean in order to prevent illness
Constipated : unable to ged rid of waste material from the bowels easily

Quarantine : to keep the patients aloof in order to check the spread of disease.

Chapter at a Glance

³ Water and roughage are essential for the body.
³ Disease is an illness that affects the health of a person. Diseases can be communicable
and non-communicable.
³ Diseases can be prevented or controlled by maintaining personal and general hygiene,
vaccinations and medicines.
³ Nutrients present in food are proteins, carbohydrates, fats, vitamins and minerals.
³ Proteins help in growth and repair of the body cells.
³ Water helps the various body systems to work. It helps in smooth joint movements,
maintains body temperature, protects delicate body parts, fights diseases and is
important for the skin, hair and eyes.
³ Diseases spread through physical contact with the infected person and also through
air, water, food and insects.

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