| A | B |
|---|
| adolescent | a young person who is becoming an adult |
| stage | a particular time or state that something reaches as it grows or develops |
| sleep-deprived | lacking the sleep needed over a period of time |
| puberty | the time when a person's body changes from a child to an adult |
| deficit | the difference between how much you have and how much you need |
| hormone | chemicals in the body that affect how it grows and develops |
| metabolism | the process in the body that changes food into energy for working and growing |
| symptom | something wrong with your body or mind that shows you are ill |
| data | information or facts |
| toll | to have a bad effect on someone or something |
| poll | survey |
| propose | to suggest |
| vital | important |
| optimal | Best, most desirable or favorable |
