Underneath your skin you have a layer of fibres. These fibres are your ...
muscles
Muscles have one very important job, they ... us.
move
Without muscles you can't walk or run, ... or cry, stand up or sit down.
laugh
There ... two kinds of muscles: voluntary and involuntary.
are
The ... muscles only work when your brain tells them to do something.
voluntary
Most of the voluntary muscles are ... to the bones in your skeleton.
attached
Involuntary muscles already ... what to do
know
Involuntary muscles are responsible for the beating of your ...
heart
Muscles need energy to work and they ... it from the food that you eat.
get
Muscles need ... from foods like fruit, pasta and potatoes to turn into ...
carbohydrates; energy
Muscles also need a lot of exercise to ... them strong and working well. It is important to exercise all the different sets of muscles.
keep
You should not ...the amount of exercise in one part of your body because that can be bad for you too.
overdo
If you ... a lot and play sports regularly, you are probably ... enough exercise to keep your muscles healthy.
walk; getting
If you ... your day playing on your computer, your fingers and ... will be healthy but the rest of your muscles won't be very strong.
spend; thumbs
