to lift
to raise something from a lower position to a higher one
to be able to
someone has the skill to do something
chew food
to use your teeth to break the food into small pieces
shape up
to make your body stronger, healthier, or more fit
skeletal muscles
the muscles you can see and control
smooth muscles
muscles inside your body that work without you thinking about them
cardiac muscle
muscle that is found only in your heart
Voluntary muscles
muscles that you can control
involuntary muscles
muscles that work automatically — you can’t control them
wiggle
to move something quickly back and forth
gullet muscle
muscle in your throat that helps move food when you swallow
swallow
undigested food
food that your body hasn't yet broken down
lungs
inside your chest, and they help you breathe
neglect
to ignore or not take care of something or someone
advise
tell people what you think is the best thing to do
