The benefits of good posture

ellyfish /ˈdʒel.i.fɪʃ/ noun [ C ] plural jellyfish
jellyfish
a sea animal with a soft oval almost transparent body
translucent /trænzˈluː.s ə nt/ /træns-/ adjective often approving
If an object or a substance is translucent, it is almost transparent, allowing some light through it in an attractive way
translucent plastic/glass
propel /prəˈpel/ verb
to push or move something somewhere, often with a lot of force
a rocket propelled through space
spinal ˈ cord noun [ C ]
the set of nerves inside the spine that connect the brain to other nerves in the body
rudimentary /ˌruː.dɪˈmen.t ə r.i/ , /-tri/ /-tɚ-/ adjective formal
1. basic
Her knowledge is still only rudimentary.
digestive /d a  ɪˈdʒes.tɪv/ adjective
relating to the digestion of food
the digestive process
sting /stɪŋ/ verb
1. [ I or T ] If an insect, plant or animal stings, it produces a small but painful injury, usually with a poison, by brushing against the skin or making a very small hole under the skin
Do all types of bee sting?
tingle /ˈtɪŋ.gl ̩/ verb [ I ]
1. to have a feeling as if a lot of sharp points are being put quickly and lightly into your body
My toes and fingers are tingling with the cold.
agitate /ˈædʒ.ɪ.teɪt/ verb
1. [ T ] to make someone feel anxious or angry
I didn't want to agitate her by telling her.
proliferate /prəˈlɪf. ə r.eɪt/ /-ə.reɪt/ verb [ I ] formal
to increase a lot and suddenly in number
Small businesses have proliferated in the last ten years.
immature /ˌɪm.əˈtʃʊə r / /-ˈtʊr/ adjective
1. disapproving not behaving in a way which is as calm and wise as people expect from someone of your age
Stop being so silly and immature, Ben!
beacon /ˈbiː.k ə n/ noun [ C ]
a light or fire on the top of a hill that acts as a warning or signal
As part of the centenary celebrations a chain of beacons was lit across the region.

19. 
    HOW TSUNAMIS WORK
    

retreat /rɪˈtriːt/ verb
1. [ I often + adverb or preposition ] to go away from a place or person in order to escape from fighting or danger
Attacks by enemy aircraft forced the tanks to retreat ( from the city).
stroke /strəʊk/ /stroʊk/ noun
(a line or mark made by) a movement of a pen or pencil when writing or a brush when painting
a brush stroke
With a few bold strokes, she signed her name.