Four significant factors to strengthen the immune system

Pre-Reading Questions: Is everyday exercise important? Why or why not? What comes to your mind when you hear the word health? Vocabulary: strengthen /STRENGK-thuhn/ [verb] to make something stronger or more effective, or to become stronger or more effective Attending voice lessons strengthened her talent and allowed her to join the International Singing Contest. adequate /AD-i-kwit/ [adjective] enough or satisfactory for a particular purpose The donation of foods from other countries was adequate to support 2,000 families. risk /risk/ [noun] the possibility of something bad happening There’s a high risk of infection in the area near the university. essential /uh-SEN-shuhl/ [adjective] necessary or needed The most essential thing to be…
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